QMP 7.1 D/D Channabasaveshwara Institute of Technology (An ISO 9001:2008 Certified Institution) NH 206 (B.H. Road), Gubbi, Tumkur Karnataka.

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1 QMP 7.1 D/D Channabasaveshwara Institute of Technology (An ISO 9001:2008 Certified Institution) NH 206 (B.H. Road), Gubbi, Tumkur Karnataka. Department of Information Science & Engineering SYLLABUS DATABASE APPLICATION LABORATORY (Common to CSE & ISE) Subject Code: 10CSL57 I.A. Marks : 25 Hours/Week : 03 Exam Hours: 03 Total Hours : 42 Exam Marks: 50 I. Consider the following relations: I. Consider the following relations: STUDENT (snum: integer, sname: string, major: string, level: string, age: integer) CLASS (name: string, meets at: string, room: string, d: integer) ENROLLED (snum: integer, cname: string) FACULTY (fid: integer, fname: string, deptid: integer) The meaning of these relations is straightforward; for example, Enrolled has one record per student-class pair such that the student is enrolled in the class. Level is a two character code with 4 different values (example: Junior: JR etc) Write the following queries in SQL. No duplicates should be printed in any of the answers. (i) Find the names of all Juniors (level = JR) who are enrolled in a class taught by Prof.Harshith (ii) Find the names of all classes that either meet in room R128 or have five or more Students enrolled. (iii) Find the names of all students who are enrolled in two classes that meet at the same time. (iv) Find the names of faculty members who teach in every room in which some class is taught. (v) Find the names of faculty members for whom the combined enrollment of the courses that they teach is less than five. ENT (snum: integer, sname: string, major: string, level: string, age: integer) II. The following relations keep track of airline flight information: FLIGHTS (no: integer, from: string, to: string, distance: integer, Departs: time, arrives: time, price: real) AIRCRAFT (aid: integer, aname: string, cruisingrange: integer) CERTIFIED (eid: integer, aid: integer) EMPLOYEES (eid: integer, ename: string, salary: integer) Note that the Employees relation describes pilots and other kinds of employees as well; Every pilot is certified for some aircraft, and only pilots are certified to fly. Write each of the following queries in SQL. (i) Find the names of aircraft such that all pilots certified to operate them have salaries more than Rs.80, 000. (ii) For each pilot who is certified for more than three aircrafts, find the eid and the maximum cruisingrange of the aircraft for which she or he is certified. (iii) Find the names of pilots whose salary is less than the price of the cheapest route from Bengaluru to Frankfurt. (iv) For all aircraft with cruisingrange over 1000 Kms,.find the name of the aircraft and the average salary of all pilots certified for this aircraft. (v) Find the names of pilots certified for some Boeing aircraft. (vi) Find the aids of all aircraft that can be used on routes from Bengaluru to New Delhi. Dept of ISE, CIT, Gubbi Page 1

2 III. Consider the following database of student enrollment in courses and books adopted for each course. STUDENT (regno: string, name: string, major: string, bdate: date) COURSE (course#: int, cname: string, dept: string) ENROLL (regno: string, course#: int, sem: int, marks: int) BOOK_ADOPTION (course#: int, sem: int, book-isbn: int) TEXT (book-isbn: int, book-title: string, publisher: string, author: string) (i) Create the above tables by properly specifying the primary keys and the foreign keys. (ii) Enter atleast five tuples for each relation. (iii) Demonstrate how you add a new text book to the database and make this book be adopted by some department. (iv) Produce a list of text books (include Course#, Book-ISBN, Book-title) in the alphabetical order for courses offered by the CS department that use more than two books. (v) List any department that has all its adopted books published by a specific publisher. (vi) Generation of suitable reports. Create suitable front end for querying and displaying the results. LASS (name: string, meets at: string, room: string, d: integer) IV. The following tables are maintained by a book dealer. AUTHOR (author-id: int, name: string, city: string, country: string) PUBLISHER (publisher-id: int, name: string, city: string, country: string) CATALOG (book-id: int, title: string, author-id: int, publisher-id: int, category-id: int, year: int, price: int) CATEGORY (category-id: int, description: string) ORDER-DETAILS (order-no: int, book-id: int, quantity: int) i. Create the above tables by properly specifying the primary keys and foreign keys. ii. Enter atleast five tuples for each tables. iii. Give the details of the authors who have 2 or more books in the catalog and the price of the books is greater than the average price of the books in the catalog and the year of publication is after iv. Find the author of the book which has maximum sales. v. Demonstrate how you increase the price of books published by a specific publisher by 10%. vi. Generation of suitable reports Create suitable front end for querying and displaying the results. V. Consider the following database for a banking enterprise. BRANCH (branch-name: string, branch-city: string, assets: real) ACCOUNT (accno: int, branch-name: string, balance: real) DEPOSITOR (customer-name: string, accno: int) CUSTOMER (customer-name: string, customer-street: string, customer-city: string) LOAN (loan-number: int, branch-name: string, amount: real) BORROWER (customer-name: string, loan-number: int) i. Create the above tables by properly specifying the primary keys and foreign keys. ii. Enter atleast five tuples for each relation. iii. Find all the customers who have atleast two accounts at the main branch. iv. Find all the customers who have an account at all the branches located in a specific city. v. Demonstrate how you delete all account tuples at every branch located in a specific city. vi. Generation of suitable reports. Create suitable front end for querying and displaying the results. Dept of ISE, CIT, Gubbi Page 2

3 Instructions: 1. The exercises are to be solved in an RDBMS environment like Oracle or DB2. 2. Suitable tuples have to be entered so that queries are executed correctly. 3. Front end may be created using either VB or VAJ or any other similar tool. 4. The student need not create the front end in the examination. The results of the queries may be displayed directly. 5. Relevant queries other than the ones listed along with the exercises may also be asked in the examination. 6. Questions must be asked based on lots. ENROLLED (snum: integer, cname: string) FACULTY (fid: integer, fname: string, deptid: integer) Dept of ISE, CIT, Gubbi Page 3

4 MySQL Database: MySQL is a freely available open source Relational Database Management System (RDBMS) that uses Structured Query Language (SQL). SQL is the most popular language for adding, accessing and managing content in a database. It is most noted for its quick processing, proven reliability, ease and flexibility of use. MySQL is a fast, easy-to-use RDBMS being used for many small and big businesses. MySQL is developed, marketed, and supported by MySQL AB, which is a Swedish company. MySQL is becoming so popular because of many good reasons: MySQL is released under an open-source license. So you have nothing to pay to use it. MySQL is a very powerful program in its own right. It handles a large subset of the functionality of the most expensive and powerful database packages. MySQL uses a standard form of the well-known SQL data language. MySQL works on many operating systems and with many languages including PHP, PERL, C, C++, JAVA, etc. MySQL works very quickly and works well even with large data sets. MySQL is very friendly to PHP, the most appreciated language for web development. MySQL supports large databases, up to 50 million rows or more in a table. The default file size limit for a table is 4GB, but you can increase this (if your operating system can handle it) to a theoretical limit of 8 million terabytes (TB). MySQL occupies very less disk space. MySQL is customizable. The open-source GPL license allows programmers to modify the MySQL software to fit their own specific environments. How to Install MySQL on Ubuntu Using terminal: To install MySQL, run the following command from a terminal prompt: sudo apt-get install mysql-server During the installation process you will be prompted to enter a password(for ex: root) for the MySQL root user. Once the installation is complete, the MySQL server should be started automatically. How to Access the MySQL shell Once you have MySQL installed on your droplet, you can access the MySQL shell by typing the following command into terminal: mysql -u root -p Enter the mysql password: root -u root -p refers to user root password. Login to MySQL as root user(u) with mysql password(p). Points to keep in mind: Dept of ISE, CIT, Gubbi Page 4

5 All MySQL commands end with a semicolon; if the phrase does not end with a semicolon, the command will not execute. Also, although it is not required, MySQL commands are usually written in uppercase and databases, tables, user names, or text are in lowercase to make them easier to distinguish. However, the MySQL command line is not case sensitive. Commands in the command line are not case sensitive. But the tables and database names are case sensitive. The table name stud is not the same as STUD. Summary of MySQL Commands Commands at the Database-Level 1: To Delete the database (irrecoverable!) DROP DATABASE databasename 2: Delete if it exists DROP DATABASE IF EXISTS databasename 3: Create a new database CREATE DATABASE databasename 4: Create only if it does not exists CREATE DATABASE IF NOT EXISTS databasename 5: Show all the databases in this server SHOW DATABASES 6: Set the default (current) database USE databasename 7: Show the default database SELECT DATABASE() 8: Show the CREATE DATABASE statement SHOW CREATE DATABASE databasename Dept of ISE, CIT, Gubbi Page 5

6 Commands at the Table-Level 1: To Delete the table (irrecoverable!) DROP TABLE [IF EXISTS] tablename,... 2: 3: Create a new table CREATE TABLE [IF NOT EXISTS] tablename ( columnname columntype columnattribute,... PRIMARY KEY(columnName), FOREIGN KEY (columnnmae) REFERENCES tablename (columnnmae) ) 3: Show all the tables in the default database SHOW TABLES 4: Describe the details for a table DESCRIBE DESC tablename 5: Modify a table, e.g., ADD COLUMN and DROP COLUMN 1: ALTER TABLE tablename... 2: ALTER TABLE tablename ADD columndefinition 3: ALTER TABLE tablename DROP columnname 4: ALTER TABLE tablename ADD FOREIGN KEY (columnnmae) REFERENCES tablename (columnnmae) 5: ALTER TABLE tablename DROP FOREIGN KEY constraintname 6: Show the CREATE TABLE statement for this tablename SHOW CREATE TABLE tablename Commands at the Row-Level 1: Insert on all Columns INSERT INTO tablename VALUES (column1value, column2value,...) 2: Insert multiple rows INSERT INTO tablename VALUES (column1value, column2value,...), (column1value, column2value,...)... 3: Insert on selected Columns INSERT INTO tablename (column1name,..., columnnname)values (column1value,..., columnnvalue) 4: Deleting particular row DELETE FROM tablename WHERE criteria Dept of ISE, CIT, Gubbi Page 6

7 5: UPDATE tablename SET columnname = expr,... WHERE criteria 6: SELECT * column1name AS alias1,..., columnnname AS aliasn FROM tablename WHERE criteria GROUP BY columnname ORDER BY columnname ASC DESC,... HAVING groupconstraints LIMIT count offset count Others 1: Show the warnings of the previous statement SHOW WARNINGS; Help & Exit Command 1: To get any information about the commands used in the mysql use "help" command. Eg: help insert; help create; 2: Type exit to exit from the MySQL prompt. How to Create and Delete a MySQL Database To check what databases are available show databases; mysql> show databases; database information_schema mysql performance_schema test rows in set (0.01 sec) creating a database create database database name; (in this case, for example, we will call our database "company.") create database company; mysql> show databases; database information_schema company mysql Dept of ISE, CIT, Gubbi Page 7

8 performance_schema test rows in set (0.00 sec) deleting a mysql database drop database database name; drop database database company; how to access a mysql database to open up the database we want to use: use company; To check the overview of the tables that the database contains. show tables; How to create a mysql table To create a employee table inside company database. create table employee ( id int not null primary key auto_increment, name varchar(20), city varchar(30), gender char(1) dob not null date ); This command accomplishes a number of things: 1: It has created a table called employee within the directory, company. 2: We have set up 5 columns in the table id, name, city, gender, dob. 3: The id column has a command (INT NOT NULL PRIMARY KEY AUTO_INCREMENT) that automatically numbers each row. 4: The name column has been limited by the VARCHAR command to be under 20 characters long. 5: The city column records the city that each employee belongs to. The VARCHAR limits text to be under 30 characters. 6: The gender column records the gender of the employee with single character, M or F. 7: The dob column will show the date of birth of the employee. MySQL requires that dates be written as yyyy-mm-dd Dept of ISE, CIT, Gubbi Page 8

9 mysql> SHOW TABLES; Tables_in_events employee row in set (0.01 sec) How to display the table s organization mysql>describe employee; Field Type Null Key Default Extra id int(11) NO PRI NULL auto_increment name varchar(20) YES NULL city varchar(30) YES NULL gender char(1) YES NULL dob date NO rows in set (0.01 sec) How to Add Information to a MySQL Table To add information to a table, the command used is insert. Insert command can be used in many ways, 1: Insert a row with all the column values. Syntax: INSERT INTO tablename VALUES (firstcolumnvalue,..., lastcolumnvalue) mysql>insert INTO employee VALUES (1001, kumar, Bangalore, M, ); 2: Inserting multiple rows in one command. Inserting NULL to the auto_increment column results in max_value + 1 Syntax: INSERT INTO tablename VALUES (row1firstcolumnvalue,..., row1lastcolumnvalue), (row2firstcolumnvalue,..., row2lastcolumnvalue),... mysql>insert INTO employee VALUES (NULL, 'Santhosh', 'Tumkur', "M", ), (NULL, 'vandana', 'Hasan', "F", ); 3: To insert a row with values on selected columns only. Missing value for the auto_increment column also results in max_value + 1 Syntax: INSERT INTO tablename (column1name,..., columnnname) VALUES (column1value,..., columnnvalue) Dept of ISE, CIT, Gubbi Page 9

10 mysql> INSERT INTO employee (name, city) VALUES ('Santhosh', 'Tumkur'),( 'vandana', 'Hasan'); Alternately, use SET to set the values INSERT INTO tablename SET column1=value1, column2=value2,... 4: Missing columns get their default values mysql> INSERT INTO products (name, city) VALUES ('Nuthan', 'Tumkur'); 5: Remove the row mysql> DELETE FROM employee WHERE id = 1003; mysql> select * from employee; id name city gender dob kumar Bangalore M santhosh Tumkur M nuthan Hasan M rows in set (0.00 sec) Querying the Database - SELECT 1: list all the rows of the specified columns. syntax : select column1name, column2name,... from tablename mysql> select name,city from employee; 2: list all the rows of all columns, * is a wildcard denoting all columns syntax: select * from tablename mysql> select * from employee; 3: list rows that meet the specified criteria in where clause syntax: select column1name, column2name,... from tablename where criteria mysql> select name, city from employee where id=105; MySQL Data Types 1: Numeric Data Types: INT : If signed, the allowable range is from to If unsigned, the allowable range is from 0 to You can specify a width of up to 11 digits. TINYINT : If signed, the allowable range is from -128 to 127. If unsigned, the allowable range is from 0 to 255. You can specify a width of up to 4 digits. SMALLINT : If signed, the allowable range is from to If unsigned, the allowable range is from 0 to You can specify a width of up to 5 digits. MEDIUMINT : If signed, the allowable range is from to If unsigned, the allowable range is from 0 to You can specify a width of up to 9 digits. BIGINT : If signed, the allowable range is from to Dept of ISE, CIT, Gubbi Page 10

11 If unsigned, the allowable range is from 0 to You can specify a width of up to 20 digits. FLOAT(M,D) : A floating-point number that cannot be unsigned. You can define the display length (M) and the number of decimals (D). This is not required and will default to 10,2, where 2 is the number of decimals and 10 is the total number of digits (including decimals). Decimal precision can go to 24 places for a FLOAT. DOUBLE(M,D) : A double precision floating-point number that cannot be unsigned. You can define the display length (M) and the number of decimals (D). This is not required and will default to 16,4, where 4 is the number of decimals. Decimal precision can go to 53 places for a DOUBLE. REAL is a synonym for DOUBLE. DECIMAL(M,D) - An unpacked floating-point number that cannot be unsigned. In unpacked decimals, each decimal corresponds to one byte. Defining the display length (M) and the number of decimals (D) is required. NUMERIC is a synonym for DECIMAL. 2: Date and Time Types: DATE - A date in YYYY-MM-DD format, between and For example, December 30th, 1973 would be stored as DATETIME - A date and time combination in YYYY-MM-DD HH:MM:SS format, between :00:00 and :59:59. For example, 3:30 in the afternoon on December 30th, 1973 would be stored as :30:00. TIMESTAMP - A timestamp between midnight, January 1, 1970 and sometime in This looks like the previous DATETIME format, only without the hyphens between numbers; 3:30 in the afternoon on December 30th, 1973 would be stored as ( YYYYMMDDHHMMSS ). TIME - Stores the time in HH:MM:SS format. YEAR(M) - Stores a year in 2-digit or 4-digit format. If the length is specified as 2 (for example YEAR(2)), YEAR can be 1970 to 2069 (70 to 69). If the length is specified as 4, YEAR can be 1901 to The default length is 4. 3: String Types: CHAR(M) - A fixed-length string between 1 and 255 characters in length (for example CHAR(5)), right-padded with spaces to the specified length when stored. Defining a length is not required, but the default is 1. VARCHAR(M) - A variable-length string between 1 and 255 characters in length; for example VARCHAR(25). You must define a length when creating a VARCHAR field. BLOB or TEXT - A field with a maximum length of characters. BLOBs are "Binary Large Objects" and are used to store large amounts of binary data, such as images or other types of files. Fields defined as TEXT also hold large amounts of data; the difference between the two is that sorts and comparisons on stored data are case sensitive on BLOBs and are not case sensitive in TEXT fields. You do not specify a length with BLOB or TEXT. TINYBLOB or TINYTEXT - A BLOB or TEXT column with a maximum length of 255 characters. You do not specify a length with TINYBLOB or TINYTEXT. MEDIUMBLOB or MEDIUMTEXT - A BLOB or TEXT column with a maximum length of characters. You do not specify a length with MEDIUMBLOB or MEDIUMTEXT. LONGBLOB or LONGTEXT - A BLOB or TEXT column with a maximum length of Dept of ISE, CIT, Gubbi Page 11

12 characters. You do not specify a length with LONGBLOB or LONGTEXT. ENUM - An enumeration, which is a fancy term for list. When defining an ENUM, you are creating a list of items from which the value must be selected (or it can be NULL). For example, if you wanted your field to contain "A" or "B" or "C", you would define your ENUM as ENUM ('A', 'B', 'C') and only those values (or NULL) could ever populate that field. DATABASE 1 : College_database DESCRIPTION: The following relations keep track of students, their enrollment for classes along with faculty information. Student (snum: integer, sname: string, major: string, level: string, age: integer) Class (name: string, meets at: string, room: string, d: integer) Enrolled (snum: integer, cname: string) Faculty (fid: integer, fname: string, deptid: integer) NOTE: The meaning of these relations is straight forward.for example, Enrolled has one record per student-class pair such that the student is enrolled in the class. Level is a two character code with 4 different values (example: Junior: JR etc) Queries: Write the following queries in SQL. No duplicates should be printed in any of the answers. 1. Find the names of all juniors (level=jr) who are enrolled for class taught by professor Harshith. 2. Find the names of all classes that either meet in room128 or have 5 or more students enrolled. 3. Find the names of all students who are enrolled in two classes that meet at same time. 4. Find the names of faculty members who teach in every room in which some class is taught. 5. Find the names of the faculty members for whom the combined enrollment of the classes that they teach is less than five. Dept of ISE, CIT, Gubbi Page 12

13 ER Diagram Meets Snum Snam Snum Cname Fid Room STUDENT Enro CLASS Level Majo Cname Teach Age Deptid FACULTY Fid Fname mysqll> create table student ( mysql> create table faculty ( ); snum integer primary key, sname varchar(15), major varchar(10), level1 varchar(2), age integer ); fid integer primary key, fname varchar(15), deptid integer Dept of ISE, CIT, Gubbi Page 13

14 mysql > create table class ( ); cname varchar(10) primary key, meetsat varchar(4), room varchar(5), fid integer, foreign key(fid) references faculty(fid) mysql > create table enrolled ( snum integer, cname varchar(10), foreign key(snum) references student(snum), foreign key(cname) references class(cname), primary key(snum,cname) ); mysql > desc student; Field Type Null Key Default Extra snum int(11) NO PRI NULL sname varchar(15) YES NULL major varchar(10) YES NULL level1 varchar(2) YES NULL age int(11) YES NULL rows in set (0.00 sec) mysql > insert into student values (1, arthi, os, jr, 21); mysql >insert into student values (2, bhavesh, is, sr, 22); mysql >insert into student values (3, chanasya, ec, jr, 21); mysql >insert into student values (4, sowmya, cs, sr, 23); mysql >insert into student values (5, sanjay, ec, jr, 21); mysql >insert into student values (10, giri, ccn, jr, 20); mysql >insert into student values (20, asha, os, jr, 30); mysql> select * from stud; snum sname major level1 age arun os jr 21 2 bhanu ls sr 22 3 chanasya ec jr 21 4 sowmya cs sr 23 5 gowri ccn jr 20 6 asha os jr rows in set (0.00 sec) Dept of ISE, CIT, Gubbi Page 14

15 mysql > desc faculty; Field Type Null Key Default Extra fid int(11) NO PRI NULL fname varchar(15) YES NULL deptid int(11) YES NULL rows in set (0.00 sec) mysql > insert into faculty values(11, bharathi,111); mysql > insert into faculty values(22, nirmala,222); mysql > insert into faculty values(33, prof.harshith,333); mysql > insert into faculty values(44, bhavana,111); mysql > insert into faculty values(55, usha,111); mysql> select * from faculty; fid fname deptid bharathi nirmala prof.harshith bhavana usha rows in set (0.00 sec) mysql > desc class; Field Type Null Key Default Extra cname varchar(10) NO PRI NULL meetsat varchar(4) YES NULL room varchar(5) YES NULL fid int(11) YES MUL NULL rows in set (0.00 sec) mysql > insert into class values( ccna, 10:00, r126,33); mysql > insert into class values( cobol, 10:00, r127,22); mysql > insert into class values( dotnet, 9:00, r101,33); mysql > insert into class values( java, 11:15, r126,22); mysql > insert into class values( jcp, 12:15, r128,22); mysql > insert into class values( oops, 12:15, r127,22); mysql > insert into class values( oracle, 12:15, r128,11); mysql > insert into class values( testiing, 11:15, r101,22); Dept of ISE, CIT, Gubbi Page 15

16 mysql> select * from class; cname meetsat room fid ccna 10:0 r cobol 10:0 r dotnet 9:00 r java 11:1 r jcp 12:1 r oops 12:1 r oracle 12:1 r testiing 11:1 r rows in set (0.00 sec) mysql > desc enrolled; Field Type Null Key Default Extra snum int(11) NO PRI 0 cname varchar(10) NO PRI rows in set (0.00 sec) mysql > insert into enrolled values(1,'cobol'); mysql > insert into enrolled values(2,'cobol'); mysql > insert into enrolled values(3,'cobol'); mysql > insert into enrolled values(4,'cobol'); mysql > insert into enrolled values(1,'dotnet'); mysql > insert into enrolled values(1,'jcp'); mysql > insert into enrolled values(5,'jcp'); mysql > insert into enrolled values(3,'oracle'); mysql > insert into enrolled values(5,'cobol'); mysql > insert into enrolled values(4,'ccna'); mysql > insert into enrolled values(3,'testing'); mysql > insert into enrolled values(3,'java'); mysql> select * from enrolled; snum cname ccna 1 cobol 2 cobol 3 cobol 4 cobol 5 cobol Dept of ISE, CIT, Gubbi Page 16

17 1 dotnet 3 java 1 jcp 5 jcp 3 oracle 5 oracle 3 testing rows in set (0.00 sec) 1. Find the names of all Juniors (level = JR) who are enrolled in a class taught by Prof. Harshith mysql > select distinct s.sname from student s, class c, enrolled e, faculty f where s.snum = e.snum and e.cname = c.cname and c.fid = f.fid and f.fname = 'prof.harshith' and s.level1 = 'jr'; sname arun row in set (0.00 sec) 2. Find the names of all classes that either meet in room R128 or have five or more Students enrolled. mysql > select c.cname from class c where c.room = 'r128' or c.cname in (select e.cname from enrolled e group by e.cname having count(*) >= 5); cname cobol jcp oracle rows in set (0.00 sec) 3. Find the names of all students who are enrolled in two classes that meet at the same time. mysql > select distinct s.sname from student s where s.snum in (select e1.snum from enrolled e1, enrolled e2, class c1, class c2 where e1.snum = e2.snum and e1.cname<>e2.cname and e1.cname=c1.cname and e2.cname=c2.cname and c1.meetsat = c2.meetsat); sname Dept of ISE, CIT, Gubbi Page 17

18 sowmya gowri rows in set (0.00 sec) 4. Find the names of faculty members who teach in every room in which some class is taught. mysql > select fname, count (distinct room) from class c, enrolled e, faculty f where c.fid=f.fid and c.cname=e.cname group by fname having count(distinct room) in (select count(distinct room) from class c, enrolled e where e.cname=c.cname); fname count(distinct room) nirmala row in set (0.00 sec) 5. Find the names of faculty members for whom the combined enrollment of the courses that they teach is less than five. mysql > select distinct f.fname from class c, enrolled e, faculty f where c.fid=f.fid and c.cname=e.cname group by f.fname having count(*)<5; fname bharathi prof.harshith rows in set (0.00 sec) Dept of ISE, CIT, Gubbi Page 18

19 DATABASE 2 : Airline_Flight_database DESCRIPTION: The following relations keep track of airline flight information: Flights (no: integer, from: string, to: string, distance: integer, Departs: time, arrives: time, price: real) Aircraft (aid: integer, aname: string, cruisingrange: integer) Certified (eid: integer, aid: integer) Employees (eid: integer, ename: string, salary: integer) Note that the Employees relation describes pilots and other kinds of employees as well; Every pilot is certified for some aircraft, and only pilots are certified to fly. Write each of the following queries in SQL. i. Find the names of aircraft such that all pilots certified to operate them have salaries more than Rs.80, 000. ii. For each pilot who is certified for more than three aircrafts, find the eid and the maximum cruisingrange of the aircraft for which she or he is certified. iii. Find the names of pilots whose salary is less than the price of the cheapest route from Bengaluru to Frankfurt. iv. For all aircraft with cruisingrange over 1000 Kms,.find the name of the aircraft and the average salary of all pilots certified for this aircraft. v. Find the names of pilots certified for some Boeing aircraft. vi. Find the aids of all aircraft that can be used on routes from Bengaluru to New Delhi. Dept of ISE, CIT, Gubbi Page 19

20 ER Diagram : mysql > create table flights ( mysql > create table aircraft ( no int primary key, fro varchar(15), too varchar(15), distance integer, departs char(6), arrives char(6), price real ); aid int primary key, aname varchar(15), crurange integer ); mysql > create table employees ( eid int primary key, cname varchar(10), salary integer ); Dept of ISE, CIT, Gubbi Page 20

21 mysql > create table certified ( eid int, aid int, foreign key(eid) references employees(eid), foreign key(aid) references aircraft(aid), primary key(eid,aid) ); mysql>describe flights; Field Type Null Key Default Extra no int(11) NO PRI NULL fro varchar(15) YES NULL too varchar(15) YES NULL distance int(11) YES NULL departs char(6) YES NULL arrives char(6) YES NULL price double YES NULL rows in set (0.00 sec) mysql>insert into flights values(4,'bangalore','australia',3000, 09:30, 12:00,150000); mysql > insert into flights values(2,'delhi','new jersey',4000, 01:30, 09:00,120000); mysql > insert into flights values(3,'hyderbad','bangalore',700, 02:30, 03:30,5000); mysql > insert into flights values(5,'angalore','kolkota',1200, 04:30, 06:30,10000); mysql> insert into flights values(6,'bangalore','newdelhi',2000, 05:30, 07:30,15000); mysql> insert into flights values(6,'bangalore','frankfrut',4000, 06:30, 11:30,20000); mysql>select * from Flights; no fro too distance departs arrives price delhi new jersey :30 09: hyderbad bangalore :30 03: bangalore australia bangalore kolkota :30 06: bangalore newdelhi :30 07: bangalore frankfrut :30 11: rows in set (0.00 sec) Dept of ISE, CIT, Gubbi Page 21

22 mysql>describe aircraft; Field Type Null Key Default Extra aid int(11) NO PRI NULL aname varchar(15) YES NULL crurange int(11) YES NULL rows in set (0.00 sec) mysql > insert into aircraft values(11, 'airindia', 4000); mysql > insert into aircraft values(22, 'boeing120', 5000); mysql > insert into aircraft values(33, 'kingfisher', 3000); mysql > insert into aircraft values(44, 'jetairways', 4000); mysql > insert into aircraft values(55, 'boeing240', 6000); mysql > insert into aircraft values(66, 'bharath', 600); mysql > insert into aircraft values(77, 'bharath160', 800); mysql>select * from Aircraft; aid aname crurange airindia boeing kingfisher jetairways boeing bharath bharath rows in set (0.00 sec) mysql>describe employees; Field Type Null Key Default Extra eid int(11) NO PRI NULL cname varchar(10) YES NULL salary int(11) YES NULL rows in set (0.01 sec) mysql > insert into employees values(123, kumar, 80000); mysql > insert into employees values(201, muruli, ); mysql > insert into employees values(301, alexander, ); mysql > insert into employees values(401, mathew, 60000); Dept of ISE, CIT, Gubbi Page 22

23 mysql > insert into employees values(501, philomina, 2000); mysql>select * from Employees; eid cname salary kumar muruli alexander mathew philomina rows in set (0.01 sec) [ mysql>describe certified; Field Type Null Key Default Extra eid int(11) NO PRI 0 aid int(11) NO PRI rows in set (0.01 sec) mysql > insert into certified values(123, 11); mysql > insert into certified values(201, 22); mysql > insert into certified values(201, 33); mysql > insert into certified values(301, 33); mysql > insert into certified values(123, 44); mysql > insert into certified values(401, 44); mysql > insert into certified values(501,44); mysql > insert into certified values(123,55); mysql > insert into certified values(123, 66); mysql>select * from certified; eid aid Dept of ISE, CIT, Gubbi Page 23

24 rows in set (0.00 sec) 1: Find the names of aircraft such that all pilots certified to operate them have salaries more than Rs.80, 000. mysql >select distinct a.aname from aircraft a,certified c,employees e where a.aid=c.aid and c.eid=e.eid and not exists (select * from employees e1 where e1.eid=e.eid and e1.salary<80000); aname boeing120 kingfisher rows in set (0.00 sec) 2. For each pilot who is certified for more than three aircrafts, find the eid and the maximum cruisingrange of the aircraft for which she or he is certified. mysql > select c.eid, max(a.crurange) from certified c, aircraft a where c.aid = a.aid group by c.eid having count(*) > 3; eid max(a.crurange) row in set (0.00 sec) 3. Find the names of pilots whose salary is less than the price of the cheapest route from Bengaluru to Frankfurt. mysql > select distinct e.cname from employees e where e.salary < ( select min(f.price) from flights f where f.fro= 'bangalore' and f.too= 'frankfrut'); cname Dept of ISE, CIT, Gubbi Page 24

25 philomina row in set (0.00 sec) 4. For all aircraft with cruisingrange over 1000 Kms,.find the name of the aircraft and the average salary of all pilots certified for this aircraft. mysql >select a.aid, avg (e.salary) from aircraft a, certified c, employees e where a.aid = c.aid and c.eid = e.eid and a.crurange > 1000 group by a.aid, a.aname); aid avg (e.salary) rows in set (0.00 sec) 5. Find the names of pilots certified for some Boeing aircraft. mysql > select distinct e.cname from employees e, certified c, aircraft a where e.eid = c.eid and c.aid=a.aid and a.aname like 'boeing%'; cname kumar muruli rows in set (0.00 sec) 6. Find the aids of all aircraft that can be used on routes from Bengaluru to New Delhi. mysql > select a.aid from aircraft a where a.crurange > ( select min(f.distance) from flights f where f.frm='bengaluru' and f.too='newdelhi'); aid Dept of ISE, CIT, Gubbi Page 25

26 rows in set (0.00 sec) Dept of ISE, CIT, Gubbi Page 26

27 DATABASE 3 : Student_Enrollment_database DESCRIPTION: Consider the following database of student enrollment in courses and books adopted for each course. STUDENT (regno: string, name: string, major: string, bdate: date) COURSE (course#: int, cname: string, dept: string) ENROLL (regno: string, course#: int, sem: int, marks: int) BOOK_ADOPTION (course#: int, sem: int, book-isbn: int) TEXT (book-isbn: int, book-title: string, publisher: string, author: string) 1: Create the above tables by properly specifying the primary keys and the foreign keys. 2: Enter at least five tuples for each relation. 3: Demonstrate how you add a new text book to the database and make this book be adopted by some department. 4: Produce a list of text books (include Course#, Book-ISBN, Book-title) in the alphabetical order for courses offered by the CS department that use more than two books. 5: List any department that has all its adopted books published by a specific publisher. 6: Generation of suitable reports. 7: Create suitable front end for querying and displaying the results. ER-Diagram: Regno Name Marks Course_no Cname STUDENT ENROLL COURSE Major Bdate Sem Dept BOOKADAPTION SEM Publisher TEXT Author Book_Isbn booktitle Dept of ISE, CIT, Gubbi Page 27

28 mysql>create table student ( regno varchar(20) primary key not null, sname varchar(20), major varchar(20), bdate date ); mysql>create table course ( cno int primary key not null, cname varchar(20), dept varchar(20) ); mysql>create table enroll ( regno varchar(20), cno int, sem int, marks int, primary key(regno,cno), foreign key (regno) references student (regno), foreign key (cno) references course (cno) ); mysql>create table text ( book_isbn int primary key not null, book_title varchar(20), pubisher varchar(20), author varchar(20) ); mysql>create table book_adoption ( cno int, sem int, book_isbn int, primary key(cno,book_isbn), foreign key (cno) references course (cno), foreign key (book_isbn) references text (book_isbn) ); mysql>describe student; Field Type Null Key Default Extra regno varchar(20) NO PRI NULL sname varchar(20) YES NULL major varchar(20) YES NULL bdate date YES NULL Dept of ISE, CIT, Gubbi Page 28

29 rows in set (0.00 sec) mysql>insert into student values ('1cg04is012','asha','networks', ); mysql>insert into student values ('1cg04is030','anitha','fafl', ); mysql>insert into student values ('1cg04is064','chandrika','ada', ); mysql>insert into student values ('1cg04is105','Kumar','coding', ); mysql> insert into student values ('1cg04is110','Gagan','coding', ); mysql> select * from student; regno sname major bdate cg04is012 asha networks cg04is030 anitha fafl cg04is064 chandrika ada cg04is105 Kumar coding cg04is110 Gangan coding rows in set (0.00 sec) mysql>describe course; Field Type Null Key Default Extra cno int(11) NO PRI NULL cname varchar(20) YES NULL dept varchar(20) YES NULL rows in set (0.00 sec) mysql>insert into course values (1,'network','ec'); mysql>insert into course values (2,'fafl','cs'); mysql>insert into course values (3,'ada','cs'); mysql>insert into course values (4,'coding','ec'); mysql>insert into course values (5,'datastr','cs'); mysql>insert into course values (6,'testing','ec'); mysql>select * from course; cno cname dept network ec 2 fafl cs 3 ada cs 4 coding ec 5 datastr cs Dept of ISE, CIT, Gubbi Page 29

30 6 testing ec rows in set (0.00 sec) mysql>describe enroll; Field Type Null Key Default Extra regno varchar(20) NO PRI cno int(11) NO PRI 0 sem int(11) YES NULL marks int(11) YES NULL rows in set (0.01 sec) mysql>insert into enroll values ('1cg04is012',1,6,85); mysql>insert into enroll values ('1cg04is030',2,6,90); mysql>insert into enroll values ('1cg04is064',3,6,92); mysql>insert into enroll values ('1cg04is105',4,6,95); mysql>insert into enroll values ('1cg04is110',5,4,90); mysql>select * from enroll; regno cno sem marks cg04is cg04is cg04is cg04is cg04is rows in set (0.00 sec) mysql>desc text; Field Type Null Key Default Extra book_isbn int(11) NO PRI NULL book_title varchar(20) YES NULL pubisher varchar(20) YES NULL author varchar(20) YES NULL rows in set (0.00 sec) mysql>insert into text values (111,'comp net','tmg','garcia'); mysql>insert into text values (222,'algo des','pearson','leviten'); mysql>insert into text values (333,'automata','pearson','ullman'); Dept of ISE, CIT, Gubbi Page 30

31 mysql>insert into text values (444,'data str','pearson','tbaum'); mysql>insert into text values (555,'usp','pearson','yash'); mysql>insert into text values (666,'algo2','pearson','leviten'); mysql>insert into text values (777,'networks','pearson','garcia'); mysql>insert into text values (888,'swtesting','sapna,'sapna'); mysql>select * from text; book_isbn book_title pubisher author comp net tmg garcia 222 algo des pearson leviten 333 automata pearson ullman 444 data str pearson tbaum 555 usp pearson yash 666 algo2 pearson leviten 777 networks pearson garcia 888 swtesting sapna sapna rows in set (0.00 sec) mysql>desc book_adoption; Field Type Null Key Default Extra cno int(11) NO PRI 0 sem int(11) YES NULL book_isbn int(11) NO PRI rows in set (0.01 sec) mysql>insert into book_adoption values (01,6,111); mysql>insert into book_adoption values (02,6,333); mysql>insert into book_adoption values (02,6,666); mysql>insert into book_adoption values (02,6,111); mysql>insert into book_adoption values (03,6,222); mysql>insert into book_adoption values (03,5,555); mysql>insert into book_adoption values (04,6,555); mysql>insert into book_adoption values (05,3,444); mysql>insert into book_adoption values (01,6,666); mysql>insert into book_adoption values (01,6,777); mysql>insert into book_adoption values (03,6, 777); mysql>insert into book_adoption values (04,6, 777); mysql>insert into book_adoption values (06,6, 888); mysql>select * from book_adoption; Dept of ISE, CIT, Gubbi Page 31

32 cno sem book_isbn rows in set (0.00 sec) 1: Demonstrate how you add a new text book to the database and make this book be adopted by some department. mysql>insert into text values ( 999, multimedia, phi, navathe ); mysql>insert into book_adoption values (6,3,999); mysql>select * from text; book_isbn book_title pubisher author comp net tmg garcia 222 algo des pearson leviten 333 automata pearson ullman 444 data str pearson tbaum 555 usp pearson yash 666 algo2 pearson leviten 777 networks pearson garcia 888 swtesting sapna sapna 999 multimedia phi navathe rows in set (0.01 sec) 2: Produce a list of text books (include Course#, Book-ISBN, Book-title) in the alphabetical order for courses offered by the CS department that use more than two books. mysql>select c.cno, t.book_isbn, t.book_title from course c, book_adoption b, text t where c.cno=b.cno and t.book_isbn=b.book_isbn and c.dept='cs' Dept of ISE, CIT, Gubbi Page 32

33 [ Database Applications Laboratory and c.cno in ( select cno from book_adoption group by cno having count(*)>2) order by c.cno, t.book_title; cno book_isbn book_title algo automata comp net algo des networks usp rows in set (0.00 sec) 3: List any department that has all its adopted books published by a specific publisher.p mysql>select distinct c.dept from course c where c.dept in ( select c.dept from course c,book_adoption b,text t where c.cno=b.cno and t.book_isbn=b.book_isbn and t.publisher='sapna') and c.dept not in (select c.dept from course c,book_adoption b,text t where c.cno=b.cno and t.book_isbn=b.book_isbn and t.publisher!='sapna'); dept count(distinct b.book_isbn) ec row in set (0.00 sec) Dept of ISE, CIT, Gubbi Page 33

34 DATABASE 4 : Book_dealer_database DESCRIPTION: The following tables are maintained by a book dealer. AUTHOR (author-id: int, name: string, city: string, country: string) PUBLISHER (publisher-id: int, name: string, city: string, country: string) CATALOG (book-id: int, title: string, author-id: int, publisher-id: int, category-id: int, year: int, price: int) CATEGORY (category-id: int, description: string) ORDER-DETAILS (order-no: int, book-id: int, quantity: int) 1: Create the above tables by properly specifying the primary keys and foreign keys. 2: Enter at least five tuples for each tables. 3: Give the details of the authors who have 2 or more books in the catalog and the price of the books is greater than the average price of the books in the catalog and the year of publication is after : Find the author of the book which has maximum sales. 5: Demonstrate how you increase the price of books published by a specific publisher by 10%. 6: Generation of suitable reports. ER-Diagram: Author-id Name Title Year Publisher-id Name AUTHOR CATALOG PUBLISHER City Country Price city country Category-id CATEGORY Description N ORDER-DETAILS quantity 1 ORDER orderno Dept of ISE, CIT, Gubbi Page 34

35 mysql> create table author ( authorid number(5), name varchar(20), city varchar(20), country varchar(10), primary key(authorid) ); mysql> create table publisher ( publisherid number(5), name char(20), city char(20), country char(20), primary key(publisherid) ); mysql> create table catagory ( catagoryid number(5), description varchar(20), primary key (catagoryid) ); mysql> create table catalog ( bookid number(5), title varchar(20), authorid number(5), publisherid number(5), catagoryid number(5), year number(5), price number(4), primary key(bookid), foreign key (authorid) references author(authorid), foreign key (publisherid) references publisher (publisherid), foreign key (catagoryid) references catagory(catagoryid) ); mysql> create table order_details ( ono int primary key, bookid int, quantity int, foreign key (bookid) references catalog(bookid) ); mysql>desc author; Field Type Null Key Default Extra authorid int(11) NO PRI 0 name varchar(20) YES NULL city varchar(20) YES NULL country varchar(10) YES NULL Dept of ISE, CIT, Gubbi Page 35

36 rows in set (0.00 sec) mysql> insert into author values(1,'harish','delhi','india'); mysql> insert into author values(2,'balu','bangalore','india'); mysql> insert into author values(3,'gopal','goa','india'); mysql> insert into author values(4,'sagar','kerala','india'); mysql> insert into author values(5,'trivedi','washington','usa'); mysql> select * from author; authorid name city country harish delhi india 2 balu bangalore india 3 gopal goa india 4 sagar kerala india 5 trivedi washington usa rows in set (0.00 sec) mysql> desc publisher; Field Type Null Key Default Extra publisherid int(11) NO PRI 0 name char(20) YES NULL city char(20) YES NULL country char(20) YES NULL rows in set (0.00 sec) mysql> insert into publisher values(10,'pearson','goa','india'); mysql> insert into publisher values(11,'sapna','kerala','india'); mysql> insert into publisher values(12,'sapna','bangalore','india'); mysql> insert into publisher values(13,'sagar','kolkata','india'); mysql> insert into publisher values(14,'tata','washington','usa'); mysql> select * from publisher; publisherid name city country pearson goa india 11 sapna kerala india 12 sapna bangalore india 13 sagar kolkata india 14 tata washington usa rows in set (0.01 sec) Dept of ISE, CIT, Gubbi Page 36