CS40 Exam #2 November 14, 2001
|
|
- Carmella Heath
- 6 years ago
- Views:
Transcription
1 CS40 Exam #2 November 14, 2001 Name: Except where explicitly noted, all of the questions on this exam refer to the database defined by the relational schemas given on the last page of this exam. 1. Suppose that the Student Records database is to be augmented by a table called Testbank, which will contain exam questions. Assume that each question must relate to one or more courses. The schema is given on the last page. a. Write an SQL statement that will create this table, using the most appropriate data types. (You do not have to set any constraints other than those required by the problem statement.) [8 points] b. Write an SQL statement to insert the question: What is your favorite color? for CS40, with the answer Blue. No yell-oooooaaaah!. [6 points] c. Without making any assumptions about existing database contents, explain a possible anomaly that might occur when this insertion is made. [6 points]
2 2. a. You have cleverly gained access to the airtight Furman grades database. (No easy task!) Your student number is 19, your roommate s is 34 and your girl/boyfriend s is 41. Write an SQL statement to change all grades to A for all classes for the three of you. (For full credit, you must not use stunum= three times.) [7 points] b. Write a SQL statement to delete all of the records in the Course table for CS40. [7 points] c. What would happen as a result of the statement given in part (b) [6 points] if Sections was defined using the clause ON DELETE CASCADE? if Testbank was defined using the clause ON DELETE SET NULL? if Sections or Testbank was defined using the clause ON DELETE RESTRICT? 3. Write SQL queries for the following: [10 points each] a. List (in alphabetical order by name) the course number and student name for all courses taken by CS majors. b. List the names of all students who have received an A in a course taught by Dr. Gabbert. Don t repeat any names.
3 4. Write SQL queries for the following: [10 points each] a. List the student number, student name and count of grades for each student. The column header for the grade count should be NumGrades. b. List the student numbers and student names of all students who have received at least one grade, but have never failed a class. 5. a. List and briefly explain the steps that must be taken by a Java program to run a SELECT statement on a database using JDBC. You should add at least four steps to the list below. Your answers should demonstrate that you understand what you re talking about, not just that you can regurgitate something you read. [12 points] First step Create a null (empty) Connection object from the java.sql package Last step Loop through the ResultSet object, printing the attributes for each row, formatted appropriately. b. Consider the PINonlyGrades.php and JDBCTest.java applications that we studied in the last two labs. Suppose we wanted to modify them to run a different query against data in a different DBMS. For which application would it be easier to do this? Justify your answer with specific details. [8 points]
4 6. Short Answer: [5 points each] a. What is the purpose of the getmetadata method of the ResultSet class? b. In the following SQL statement: SELECT title FROM Movie WHERE genre= comedy ; which relational algebra operation is used to implement the underlined part? c. Which of the database management systems that we have studied support QBE as a predominant technique? d. Suppose you have executed the following SQL command in Oracle: create view StudentGrades as select st.stunum, st.stuname, g.secid, g.grade from student st, grades g where st.stunum = g.stunum; Give a short SQL statement that would produce the student number, student name, section ID and grade for every grade earned by student #19.
5 Relational Schemas for Course and Grade Database Table Attribute Data Type Keys and custom rules Student stunum number(4) primary key specify a value range: stunum between 8 and 20 stuname varchar2(8) class number(1) custom rule: class in ( 1, 2, 3, 4 ) major varchar2(4) Course cournum varchar2( 6) primary key courname varchar2( 30) credithr number( 1) custom rule: credithr in ( 2, 4 ) dept varchar2( 4) Prereq cournum varchar2( 6) primary key and foreign key prereqnm varchar2( 6) primary key and foreign key Cournum and prereqnm together form the primary key. Separately they are foreign keys. Sections secid number(4) primary key cournum varchar2 (6) foreign key semester varchar2(6) acadyear number(4) custom rule: year between 1997 and 2001 instr varchar2(10) Grades stunum number( 4) part of primary key and a foreign key secid number( 4) part of primary key and a foreign key Stunum and secid together form the primary key. Separately they are foreign keys. grade char 1 custom rule : grade in ( A, B, C, D, F ) Testbank questionid?? primary key, automatically generated cournum?? foreign key question?? could potentially be very long answer?? could potentially be very long
CS40 Exam #2 November 13, 2002
CS40 Exam #2 November 13, 2002 Name: Except where explicitly noted, all of the questions on this exam refer to the database defined by the relational schemas given on the last page of this exam. 1. For
More informationCS40 Exam #1 October 17, 2001
CS40 Exam #1 October 17, 2001 Name: 1. Short answer [5 points each]: a. Consider an ER diagram giving a conceptual schema for an Amazon.com shopping basket. A basket can contain any number of items, each
More informationCS450 - Database Concepts Fall 2015
CS450 - Database Concepts Fall 2015 Instructor: Dr. Jessica Lin Project Assignment General. Your project is to design and implement a database for an online movie rental company like Netflix (for this
More informationRelational Model, Key Constraints
Relational Model, Key Constraints PDBM 6.1 Dr. Chris Mayfield Department of Computer Science James Madison University Jan 23, 2019 What is a data model? Notation for describing data or information Structure
More informationCS275 Intro to Databases
CS275 Intro to Databases The Relational Data Model Chap. 3 How Is Data Retrieved and Manipulated? Queries Data manipulation language (DML) Retrieval Add Delete Update An Example UNIVERSITY database Information
More informationChapter 3: Introduction to SQL. Chapter 3: Introduction to SQL
Chapter 3: Introduction to SQL Database System Concepts, 6 th Ed. See www.db-book.com for conditions on re-use Chapter 3: Introduction to SQL Overview of The SQL Query Language Data Definition Basic Query
More informationChapter 3: Introduction to SQL
Chapter 3: Introduction to SQL Database System Concepts, 6 th Ed. See www.db-book.com for conditions on re-use Chapter 3: Introduction to SQL Overview of the SQL Query Language Data Definition Basic Query
More informationNJIT Department of Computer Science PhD Qualifying Exam on CS 631: DATA MANAGEMENT SYSTEMS DESIGN. Summer 2012
JIT Department of Computer Science PhD Qualifying Exam on CS 63: DATA MAAGEMET SYSTEMS DESIG Summer 202 o book or other document is allowed. Duration of the exam: 2.5 hours. The total number of points
More informationIntermediate SQL ( )
CSL 451 Introduction to Database Systems Intermediate SQL (4.1-4.4) Department of Computer Science and Engineering Indian Institute of Technology Ropar Narayanan (CK) Chatapuram Krishnan! Summary Join
More informationChapter 4. Basic SQL. SQL Data Definition and Data Types. Basic SQL. SQL language SQL. Terminology: CREATE statement
Chapter 4 Basic SQL Basic SQL SQL language Considered one of the major reasons for the commercial success of relational databases SQL Structured Query Language Statements for data definitions, queries,
More informationReferential integrity
Referential integrity Another function of the DBMS is to ensure referential integrity. This refers to the concept that a foreign key in a relation must have a corresponding entry in the table to which
More informationQQ Group
QQ Group: 617230453 1 Extended Relational-Algebra-Operations Generalized Projection Aggregate Functions Outer Join 2 Generalized Projection Extends the projection operation by allowing arithmetic functions
More informationCS 582 Database Management Systems II
Review of SQL Basics SQL overview Several parts Data-definition language (DDL): insert, delete, modify schemas Data-manipulation language (DML): insert, delete, modify tuples Integrity View definition
More informationCS348: INTRODUCTION TO DATABASE MANAGEMENT (Winter, 2011) FINAL EXAMINATION
CS348: INTRODUCTION TO DATABASE MANAGEMENT (Winter, 2011) FINAL EXAMINATION INSTRUCTOR: Grant Weddell TIME: 150 minutes WRITE YOUR NAME AND ID HERE: NOTE 1: This is a closed book examination. For example,
More informationChapter 3: Introduction to SQL
Chapter 3: Introduction to SQL Database System Concepts, 6 th Ed. See www.db-book.com for conditions on re-use Chapter 3: Introduction to SQL Overview of the SQL Query Language Data Definition Basic Query
More informationCS6302 DBMS 2MARK & 16 MARK UNIT II SQL & QUERY ORTIMIZATION 1. Define Aggregate Functions in SQL? Aggregate function are functions that take a collection of values as input and return a single value.
More informationFrom E/R Diagrams to Relations
From E/R Diagrams to Relations Entity set relation Attributes attributes Relationships relations whose attributes are only: The keys of the connected entity sets Attributes of the relationship itself 1
More informationThe SQL data-definition language (DDL) allows defining :
Introduction to SQL Introduction to SQL Overview of the SQL Query Language Data Definition Basic Query Structure Additional Basic Operations Set Operations Null Values Aggregate Functions Nested Subqueries
More informationCSE 530 Midterm Exam
CSE 530 Midterm Exam Name: (Print CLEARLY) Question Points Possible Points Earned 1 25 2 10 3 20 4 20 5 15 Total 90 1 Question 1 Heap Files Suppose we want to create a heap file with a page size of 512
More informationEGCI 321: Database Systems. Dr. Tanasanee Phienthrakul
1 EGCI 321: Database Systems Dr. Tanasanee Phienthrakul 2 Chapter 10 Data Definition Language (DDL) 3 Basic SQL SQL language Considered one of the major reasons for the commercial success of relational
More informationDatabases CSCI 201 Principles of Software Development
Databases CSCI 201 Principles of Software Development Jeffrey Miller, Ph.D. jeffrey.miller@usc.edu Outline Databases SQL Try It! USC CSCI 201L Databases Database systems store data and provide a means
More informationCS425 Fall 2016 Boris Glavic Chapter 2: Intro to Relational Model
CS425 Fall 2016 Boris Glavic Chapter 2: Intro to Relational Model Modifies from: Database System Concepts, 6 th Ed. See www.db-book.com for conditions on re-use Textbook: Chapter 2 2.2 Example of a Relation
More informationDatabase Management Systems,
Database Management Systems SQL Query Language (1) 1 Topics Introduction SQL History Domain Definition Elementary Domains User-defined Domains Creating Tables Constraint Definition INSERT Query SELECT
More informationThe DBMS accepts requests for data from the application program and instructs the operating system to transfer the appropriate data.
Managing Data Data storage tool must provide the following features: Data definition (data structuring) Data entry (to add new data) Data editing (to change existing data) Querying (a means of extracting
More informationFIT 100 More Microsoft Access and Relational Databases Creating Views with SQL
FIT 100 More Microsoft Access and Relational Databases Creating Views with SQL Creating Views with SQL... 1 1. Query Construction in SQL View:... 2 2. Use the QBE:... 5 3. Practice (use the QBE):... 6
More informationAccessing databases in Java using JDBC
Accessing databases in Java using JDBC Introduction JDBC is an API for Java that allows working with relational databases. JDBC offers the possibility to use SQL statements for DDL and DML statements.
More informationIn this Lecture. More SQL Data Definition. Deleting Tables. Creating Tables. ALTERing Columns. Changing Tables. More SQL
In this Lecture Database Systems Lecture 6 Natasha Alechina More SQL DROP TABLE ALTER TABLE INSERT, UPDATE, and DELETE Data dictionary Sequences For more information Connolly and Begg chapters 5 and 6
More informationThe Relational Model Constraints and SQL DDL
The Relational Model Constraints and SQL DDL Week 2-3 Weeks 2-3 MIE253-Consens 1 Schedule Week Date Lecture Topic 1 Jan 9 Introduction to Data Management 2 Jan 16 The Relational Model 3 Jan. 23 Constraints
More informationSQL: Data Definition Language. csc343, Introduction to Databases Diane Horton Fall 2017
SQL: Data Definition Language csc343, Introduction to Databases Diane Horton Fall 2017 Types Table attributes have types When creating a table, you must define the type of each attribute. Analogous to
More informationCS145 Final Examination
CS145 Final Examination Spring 2003, Prof. Widom ffl Please read all instructions (including these) carefully. ffl There are 11 problems on the exam, with a varying number of points for each problem and
More informationCSE 344 Midterm. Wednesday, February 19, 2014, 14:30-15:20. Question Points Score Total: 100
CSE 344 Midterm Wednesday, February 19, 2014, 14:30-15:20 Name: Question Points Score 1 30 2 50 3 12 4 8 Total: 100 This exam is open book and open notes but NO laptops or other portable devices. You have
More informationSYSTEM CODE COURSE NAME DESCRIPTION SEM
Course: CS691- Database Management System Lab PROGRAMME: COMPUTER SCIENCE & ENGINEERING DEGREE:B. TECH COURSE: Database Management System Lab SEMESTER: VI CREDITS: 2 COURSECODE: CS691 COURSE TYPE: Practical
More informationER to Relational Model. Professor Jessica Lin
ER to Relational Model Professor Jessica Lin 1 Reduction to Relation Schemas Entity sets and relationship sets can be expressed uniformly as relation schemas that represent the contents of the database.
More informationDebapriyo Majumdar DBMS Fall 2016 Indian Statistical Institute Kolkata
SQL 4 Debapriyo Majumdar DBMS Fall 2016 Indian Statistical Institute Kolkata Slides re-used, with minor modification, from Silberschatz, Korth and Sudarshan www.db-book.com Outline Join Expressions Views
More informationMidterm Exam #2 (Version A) CS 122A Winter 2017
NAME: SEAT NO.: STUDENT ID: Midterm Exam #2 (Version A) CS 122A Winter 2017 Max. Points: 100 (Please read the instructions carefully) Instructions: - The total time for the exam is 50 minutes; be sure
More information1 (10) 2 (8) 3 (12) 4 (14) 5 (6) Total (50)
Student number: Signature: UNIVERSITY OF VICTORIA Faculty of Engineering Department of Computer Science CSC 370 (Database Systems) Instructor: Daniel M. German Midterm Oct 21, 2004 Duration: 60 minutes
More informationCS2102, D15 Exam 1. Name:
CS2102, D15 Exam 1 Name: You have 50 minutes to complete the problems on the following pages. There should be sufficient space provided for your answers. If a problem asks you to create a class hierarchy,
More informationEMBEDDED SQL. SE 3DB3 Fall 2016 MICHAEL LIUT DEPARTMENT OF COMPUTING AND SOFTWARE MCMASTER UNIVERSITY
EMBEDDED SQL MICHAEL LIUT (LIUTM@MCMASTER.CA) DEPARTMENT OF COMPUTING AND SOFTWARE MCMASTER UNIVERSITY SE 3DB3 Fall 2016 (Slides adapted from Dr. Fei Chiang, Diane Horton, examples from J. Ullman, J. Widom)
More informationDatabase Management System Dr. S. Srinath Department of Computer Science & Engineering Indian Institute of Technology, Madras Lecture No.
Database Management System Dr. S. Srinath Department of Computer Science & Engineering Indian Institute of Technology, Madras Lecture No. # 5 Structured Query Language Hello and greetings. In the ongoing
More informationMidterm Exam #2 (Version B) CS 122A Spring 2018
NAME: SEAT NO.: STUDENT ID: Midterm Exam #2 (Version B) CS 122A Spring 2018 Max. Points: 100 (Please read the instructions carefully) Instructions: - The total time for the exam is 50 minutes; be sure
More informationChapter 1 SQL and Data
Chapter 1 SQL and Data What is SQL? Structured Query Language An industry-standard language used to access & manipulate data stored in a relational database E. F. Codd, 1970 s IBM 2 What is Oracle? A relational
More informationMET CS 669 Database Design and Implementation for Business Term Project: Online DVD Rental Business
MET CS 669 Database Design and Implementation for Business Term Project: Online DVD Rental Business Objective Create an initial design for the database schema for an online DVD rental business that is
More informationDebapriyo Majumdar DBMS Fall 2016 Indian Statistical Institute Kolkata
SQL 3 Debapriyo Majumdar DBMS Fall 2016 Indian Statistical Institute Kolkata Slides re-used, with minor modification, from Silberschatz, Korth and Sudarshan www.db-book.com Outline Join Expressions Views
More informationHandout 6 CS-605 Spring 18 Page 1 of 7. Handout 6. Physical Database Modeling
Handout 6 CS-605 Spring 18 Page 1 of 7 Handout 6 Physical Database Modeling Purpose- translate the logical description of data into the technical specifications for storing and retrieving data Goal - create
More informationSQL Functions (Single-Row, Aggregate)
Islamic University Of Gaza Faculty of Engineering Computer Engineering Department Database Lab (ECOM 4113) Lab 4 SQL Functions (Single-Row, Aggregate) Eng. Ibraheem Lubbad Part one: Single-Row Functions:
More informationCGS 3066: Spring 2017 SQL Reference
CGS 3066: Spring 2017 SQL Reference Can also be used as a study guide. Only covers topics discussed in class. This is by no means a complete guide to SQL. Database accounts are being set up for all students
More informationCS425 Fall 2017 Boris Glavic Chapter 4: Introduction to SQL
CS425 Fall 2017 Boris Glavic Chapter 4: Introduction to SQL Modified from: Database System Concepts, 6 th Ed. See www.db-book.com for conditions on re-use Chapter 4: Introduction to SQL Overview of the
More informationWhere Are We? Next Few Lectures. Integrity Constraints Motivation. Constraints in E/R Diagrams. Keys in E/R Diagrams
Where Are We? Introduction to Data Management CSE 344 Lecture 15: Constraints We know quite a bit about using a DBMS Start with real-world problem, design ER diagram From ER diagram to relations -> conceptual
More informationInformation Systems Engineering. SQL Structured Query Language DDL Data Definition (sub)language
Information Systems Engineering SQL Structured Query Language DDL Data Definition (sub)language 1 SQL Standard Language for the Definition, Querying and Manipulation of Relational Databases on DBMSs Its
More informationImplementing Table Operations Using Structured Query Language (SQL) Using Multiple Operations. SQL: Structured Query Language
Implementing Table Operations Using Structured Query Language (SQL) Using Multiple Operations Show Only certain columns and rows from the join of Table A with Table B The implementation of table operations
More informationConstraints. Local and Global Constraints Triggers
Constraints Foreign Keys Local and Global Constraints Triggers 1 Constraints and Triggers A constraint is a relationship among data elements that the DBMS is required to enforce. Example: key constraints.
More informationCIS 632_Pre-Requisite Quiz Introductory Project Dr. H. Assadipour
CIS 632_Pre-Requisite Quiz Introductory Project Dr. H. Assadipour 1. Table creation: CREATE TABLE Student_01 (sid number, sname varchar(20), address varchar(30), primary key (sid)); //Execute DESC Student_01;
More informationWho, where, when. Database Management Systems (LIX022B05) Literature. Evaluation. Lab Sessions. About this course. After this course...
Who, where, when base Management Systems (LIX022B05) Instructor: Çağrı Çöltekin c.coltekin@rug.nl Information science/informatiekunde Fall 2012 Course bases (LIX022B05) 2012/13 Instructor Çağrı Çöltekin
More informationEmbedded SQL. csc343, Introduction to Databases Renée J. Miller and Fatemeh Nargesian and Sina Meraji Winter 2018
Embedded SQL csc343, Introduction to Databases Renée J. Miller and Fatemeh Nargesian and Sina Meraji Winter 2018 Problems with using interactive SQL Standard SQL is not Turing-complete. E.g., Two profs
More informationDatabases. Jörg Endrullis. VU University Amsterdam
Databases Jörg Endrullis VU University Amsterdam The Relational Model Overview 1. Relational Model Concepts: Schema, State 2. Null Values 3. Constraints: General Remarks 4. Key Constraints 5. Foreign Key
More informationDatabases II: Microsoft Access
Recapitulation Databases II: Microsoft Access CS111, 2016 A database is a collection of data that is systematically organized, so as to allow efficient addition, modification, removal and retrieval. A
More informationChapter 4: Intermediate SQL
Chapter 4: Intermediate SQL Database System Concepts, 6 th Ed. See www.db-book.com for conditions on re-use Chapter 4: Intermediate SQL Join Expressions Views Transactions Integrity Constraints SQL Data
More informationCSCB20 Week 2. Introduction to Database and Web Application Programming. Anna Bretscher Winter 2017
CSCB20 Week 2 Introduction to Database and Web Application Programming Anna Bretscher Winter 2017 This Week Quick Review of terminology Relational Model Continued Relational diagrams Relational operations
More informationG64DBS Database Systems. Lecture 7 SQL SELECT. The Data Dictionary. Data Dictionaries. Different Sections of SQL (DDL) Different Sections of SQL (DCL)
G64DBS Database Systems Lecture 7 SQL SELECT Tim Brailsford Different Sections of SQL (DDL) The Data Definition Language (DDL): CREATE TABLE - creates a new database table ALTER TABLE - alters (changes)
More informationDatabase Systems: An Application-Oriented Approach (Complete Version) Practice Problems and Solutions for Students
Database Systems: An Application-Oriented Approach (Complete Version) Practice Problems and Solutions for Students Michael Kifer, Arthur Bernstein, Philip M. Lewis 1 Contents Problems for Chapter 3: The
More informationAnswer Key for Exam II Computer Science 420 Dr. St. John Lehman College City University of New York 18 April 2002
Answer Key for Exam II Computer Science 420 Dr. St. John Lehman College City University of New York 18 April 2002 1. True or False: (a) T Every set is a bag. (b) T SQL regards relations as bags of tuples,
More informationBirkbeck. (University of London) BSc/FD EXAMINATION. Department of Computer Science and Information Systems. Database Management (COIY028H6)
Birkbeck (University of London) BSc/FD EXAMINATION Department of Computer Science and Information Systems Database Management (COIY028H6) CREDIT VALUE: 15 credits Date of examination: Monday 9th June 2014
More informationMidterm Exam #2 (Version B) CS 122A Spring 2018
NAME: SEAT NO.: STUDENT ID: Midterm Exam #2 (Version B) CS 122A Spring 2018 Max. Points: 100 (Please read the instructions carefully) Instructions: - The total time for the exam is 50 minutes; be sure
More informationCSE344 Final Exam Winter 2017
CSE344 Final Exam Winter 2017 March 16, 2017 Please read all instructions (including these) carefully. This is a closed book exam. You are allowed two pages of note sheets that you can write on both sides.
More informationCSE 344 Final Examination
CSE 344 Final Examination December 12, 2012, 8:30am - 10:20am Name: Question Points Score 1 30 2 20 3 30 4 20 Total: 100 This exam is open book and open notes but NO laptops or other portable devices.
More informationName: Database Systems ( 資料庫系統 ) Midterm exam, November 15, 2006
1 of 8 pages Database Systems ( 資料庫系統 ) Midterm exam, November 15, 2006 Time: 10:00 ~ 12:20 Name: Student ID: I herewith state that I understand and will adhere to the following academic integrity: I will
More informationCSC 261/461 Database Systems Lecture 6. Fall 2017
CSC 261/461 Database Systems Lecture 6 Fall 2017 Use of WITH The WITH clause allows a user to define a table that will only be used in a particular query (not available in all SQL implementations) Used
More informationCS 4604: Introduc0on to Database Management Systems. B. Aditya Prakash Lecture #4: SQL---Part 2
CS 4604: Introduc0on to Database Management Systems B. Aditya Prakash Lecture #4: SQL---Part 2 Overview - detailed - SQL DML other parts: views modifications joins DDL constraints Prakash 2016 VT CS 4604
More informationGlobAl EDITION. Database Concepts SEVENTH EDITION. David M. Kroenke David J. Auer
GlobAl EDITION Database Concepts SEVENTH EDITION David M. Kroenke David J. Auer This page is intentionally left blank. Chapter 3 Structured Query Language 157 the comment. We will use similar comments
More informationSimple SQL. Peter Y. Wu. Dept of Computer and Information Systems Robert Morris University
Simple SQL Peter Y. Dept of Computer and Information Systems Robert Morris University Simple SQL create table drop table insert into table values ( ) delete from table where update table set a to v where
More informationMidterm Exam #2 (Version C) CS 122A Spring 2018
NAME: SEAT NO.: STUDENT ID: Midterm Exam #2 (Version C) CS 122A Spring 2018 Max. Points: 100 (Please read the instructions carefully) Instructions: - The total time for the exam is 50 minutes; be sure
More informationCS127 Homework #3. Due: October 11th, :59 P.M. Consider the following set of functional dependencies, F, for the schema R(A, B, C, D, E)
CS127 Homework #3 Warmup #1 Consider the following set of functional dependencies, F, for the schema R(A, B, C, D, E) 1. Find the candidate keys for the schema R. AB, C, D, and EA 2. Compute the closure,
More informationExamination paper for TDT4145 Data Modelling and Database Systems
Department of Computer and Information Science Examination paper for TDT4145 Data Modelling and Database Systems Academic contact during examination: Svein Erik Bratsberg: 99539963 Roger Midtstraum: 99572420
More informationOutline. Database Management Systems (DBMS) Database Management and Organization. IT420: Database Management and Organization
Outline IT420: Database Management and Organization Dr. Crăiniceanu Capt. Balazs www.cs.usna.edu/~adina/teaching/it420/spring2007 Class Survey Why Databases (DB)? A Problem DB Benefits In This Class? Admin
More informationRelational Algebra. Relational Query Languages
Relational Algebra Davood Rafiei 1 Relational Query Languages Languages for describing queries on a relational database Three variants Relational Algebra Relational Calculus SQL Query languages v.s. programming
More informationTriggers- View-Sequence
The Islamic University of Gaza Faculty of Engineering Dept. of Computer Engineering Database Lab (ECOM 4113) Lab 9 Triggers- View-Sequence Eng. Ibraheem Lubbad Triggers: A trigger is a PL/SQL block or
More informationChapter 4: Intermediate SQL
Chapter 4: Intermediate SQL Chapter 4: Intermediate SQL Join Expressions Views Transactions Integrity Constraints SQL Data Types and Schemas Authorization Joined Relations Join operations take two relations
More informationCS2300: File Structures and Introduction to Database Systems
CS2300: File Structures and Introduction to Database Systems Lecture 9: Relational Model & Relational Algebra Doug McGeehan 1 Brief Review Relational model concepts Informal Terms Formal Terms Table Relation
More informationLab # 9. Java to Database Connection
Islamic University of Gaza Faculty of Engineering Department of Computer Engineering ECOM 4113: Lab # 9 Java to Database Connection Eng. Haneen El-Masry December, 2014 2 Objective In this lab, we turn
More informationWorking with Databases and Java
Working with Databases and Java Pedro Contreras Department of Computer Science Royal Holloway, University of London January 30, 2008 Outline Introduction to relational databases Introduction to Structured
More informationThe Relational Model. Week 2
The Relational Model Week 2 1 Relations A relation is a more concrete construction, of something we have seen before, the ER diagram. name S.S.N students street city A relation is (just!) a table! We will
More informationFull file at
SQL for SQL Server 1 True/False Questions Chapter 2 Creating Tables and Indexes 1. In order to create a table, three pieces of information must be determined: (1) the table name, (2) the column names,
More informationHomework #4 1. Suppose that each of the following Update operations is applied directly to the database state shown in Figure 5.6.
Homework #4 1. Suppose that each of the following Update operations is applied directly to the database state shown in Figure 5.6. Discuss all integrity constraints violated by each operation, if any,
More information3 February 2011 CSE-3421M Test #1 p. 1 of 14. CSE-3421M Test #1. Design
3 February 2011 CSE-3421M Test #1 p. 1 of 14 CSE-3421M Test #1 Design Sur / Last Name: Given / First Name: Student ID: Instructor: Parke Godfrey Exam Duration: 75 minutes Term: Winter 2011 Answer the following
More informationCSE 544 Principles of Database Management Systems
CSE 544 Principles of Database Management Systems Lecture 1 - Introduction and the Relational Model 1 Outline Introduction Class overview Why database management systems (DBMS)? The relational model 2
More informationSQL DATA DEFINITION LANGUAGE
SQL DATA DEFINITION LANGUAGE DATABASE SCHEMAS IN SQL SQL is primarily a query language, for getting information from a database. DML: Data Manipulation Language SFWR ENG 3DB3 FALL 2016 MICHAEL LIUT (LIUTM@MCMASTER.CA)
More informationChapter Five Physical Database Design
Chapter Five Physical Database Design 1 Objectives Understand Purpose of physical database design Describe the physical database design process Choose storage formats for attributes Describe indexes and
More informationCS W Introduction to Databases Spring Computer Science Department Columbia University
CS W4111.001 Introduction to Databases Spring 2018 Computer Science Department Columbia University 1 in SQL 1. Key constraints (PRIMARY KEY and UNIQUE) 2. Referential integrity constraints (FOREIGN KEY
More information1- a> [5pts] Create the new table by writing and executing a full SQL DDL statement based on the following schema:
1. [20pts] To track the history of financial information changes such as a driver s bank account, you are going to create a table to store the history of all bank account numbers. Once created, this table
More informationCS 200. Lecture 06. Database Introduction. Database Introduction. CS 200 Winter 2018
CS 200 Lecture 06 1 Miscellaneous Notes Abbreviations aka also known as DBMS DataBase Management System mutatis mutantis with the necessary changes having been made 2 Please read and highlight BEFORE lab
More informationPLEASE HAND IN UNIVERSITY OF TORONTO Faculty of Arts and Science
PLEASE HAND IN UNIVERSITY OF TORONTO Faculty of Arts and Science APRIL 2015 EXAMINATIONS CSC 343 H1S Instructor: Horton and Liu Duration 3 hours PLEASE HAND IN Examination Aids: None Student Number: Family
More informationSQL: A COMMERCIAL DATABASE LANGUAGE. Data Change Statements,
SQL: A COMMERCIAL DATABASE LANGUAGE Data Change Statements, Outline 1. Introduction 2. Data Definition, Basic Constraints, and Schema Changes 3. Basic Queries 4. More complex Queries 5. Aggregate Functions
More informationDatabases 1. Defining Tables, Constraints
Databases 1 Defining Tables, Constraints DBMS 2 Rest of SQL Defining a Database Schema Primary Keys, Foreign Keys Local and Global Constraints Defining Views Triggers 3 Defining a Database Schema A database
More informationData! CS 133: Databases. Goals for Today. So, what is a database? What is a database anyway? From the textbook:
CS 133: Databases Fall 2018 Lec 01 09/04 Introduction & Relational Model Data! Need systems to Data is everywhere Banking, airline reservations manage the data Social media, clicking anything on the internet
More informationOverview. Database Application Development. SQL in Application Code. SQL in Application Code (cont.)
Overview Database Application Development Chapter 6 Concepts covered in this lecture: SQL in application code Embedded SQL Cursors Dynamic SQL JDBC SQLJ Stored procedures Database Management Systems 3ed
More informationDatabase Application Development
Database Application Development Chapter 6 Database Management Systems 3ed 1 Overview Concepts covered in this lecture: SQL in application code Embedded SQL Cursors Dynamic SQL JDBC SQLJ Stored procedures
More informationDatabase Application Development
Database Application Development Chapter 6 Database Management Systems 3ed 1 Overview Concepts covered in this lecture: SQL in application code Embedded SQL Cursors Dynamic SQL JDBC SQLJ Stored procedures
More informationCS 474, Spring 2016 Midterm Exam #2
CS 474, Spring 2016 Midterm Exam #2 Name: e-id: @dukes.jmu.edu By writing your name, you acknowledge the following honor code statement: I have neither given nor received unauthorized assistance on this
More informationChapter 4: Intermediate SQL
Chapter 4: Intermediate SQL Database System Concepts, 6 th Ed. See www.db-book.com for conditions on re-use 4.1 Join Expressions Let s first review the joins from ch.3 4.2 1 SELECT * FROM student, takes
More informationThis lecture. Basic Syntax
This lecture Databases - Database Definition This lecture covers the process of implementing an ER diagram as an actual relational database. This involves converting the various entity sets and relationship
More information