BLUE PRINT. S.No. Topic Marks 1 Java Programming 30 2 Database concepts 35 3 IT Applications 5

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1 BLUE PRINT S.No. Topic Marks 1 Java Programming 30 2 Database concepts 35 3 IT Applications 5

2 KENDRIYA VIDYALAYA NO.2 TAMBARAM, CHENNAI 73 HALF YEARLY EXAM 2015 CLASS : XII MARKS : 70 SUB : INFORMATICS PRACTICES TIME : 3 HRS Q.1 (a) Name any two properties of password control. 1 What is the purpose of break statement in a looop. 1 (c) (d) (e) Name the tag which is used as Section Separator. Is it a container tag? 1 What is the final value of x? How many times will this loop execute? int count=0,x=9; 2 count=x--; do { count+=x - -; }while(x>6); Write a Java code that takes one integer type value from jtextfield1. If value is positive then display the message using a labe with suitable message: Value is Positive. 2 (f) What are the characteristics of XML? 1 (g) What are the use of the following tags- 2 <OL>, <HEAD> Q.2 (a) Which MySQL command will allow you to see constraints applied to a column. 1 (c) Reena created a table named student, she wants to see those students whose name ending with p. She wrote a query- SELECT name.* FROM student WHERE name= %p ; 2 What is primary key? How is it different from candidate key? Explain with the help of suitable example. 2 (d) Write MySql command to display the list of existing databases? 1 (e) Write a query to create following table with appropriate primary

3 key. 2 BANK Ac_N o Cust_Na me Amou nt Date_of_op en No_of_transac tion (f) A table STUDENT is having 5 rows and 3 columns (Admno, Name, Marks). What would be the cardinality and degree after execution of following commands. 2 (i) Alter Table add mobile char (10); (ii) Delete from student; Q.3 (a) SS Garments sells garments. They had asked their programmer to develop the following GUI in NetBeans: The company offeres discount as per following rates Men : 10% Women : 5% Kids : 2% (i) Write the code to make the text fields Discount(tfDisc) and net amount(tfnetamt) uneditable. 1 (ii) When discount button is clicked, discount should be calculated as per the given criteria and should be displayed in the discount textfield. Also calculate the net amount and display it in the respective text field by making them editable 3 (iii) Up on clicking the EXIT button the application should be terminated. 1

4 The following code has some error(s). Rewrite the correct code underlining all the corrections made: 2 int sum=0, step=5; int i; for(i=0,i=<5,i++) { step+=5, sum=+step; } jtextarea1.showtext( +sum) ; (c) How many times does the following loop executes: 1 x=5; y=50; while(x<=y) { x=y/x; } (d) Rewrite the following program code using a if-statement: 2 String remarks; int id=integer.parseint(jtextfield1.gettext()); switch(id) { case 0 : remarks= 100 % result ; break; case 1 : remarks= 50 % result ; break; case 2 : remarks= 30% results ; break; default: remarks= Invalid entry ; } Q.4 (a) Write an output of the following queries. 3 (i) SELECT SQRT (100) ; (ii) SELECT SUBSTR ( RED SCHOOL JHAJJAR, 5, 3 ) ; (iii) Select CONCAT(substr( India is a great country,12,5), Indians ); Write the SQL Query for (i) to (vi) and output of (vii) and (viii) on the basis of table BANK given below: 7 BANK Ac_N o Cust_Na me B_Nam e Amoun t Date_of_op en No_of_transact ion A001 Agam Shah SBI

5 A002 Nishant HDFC Patel A003 Krunal ICICI A004 Twinkle HDFC A005 Jinal ICICI A006 Aaditya SBI A007 Varsha AXIS A008 Vishnu ICICI A009 Dhruv Raj UCO i. To display the number of customer in SBI who opened their account in the year ii. Display Ac_No,Amount,No_of_transaction of customers whose bank is SBI or ICICI or UCO bank. iii. Display the detail of customer whose name ends with l. iv. Display the Date _ of_ Open of oldest customer. v. Display sum of amount deposited in each bank separately. vi. Remove the detail of all customer of UCO bank. vii.select Count(distinct B_Name) from Books; viii. Select SUBSTR(Cust_Name,3,6) from BANK; Q.5 (a) Prerna is programmer at HDFC bank. To calculate the amount and interest, she has developed the following GUI in NetBeans. The rate of interest is calculates are following Fixed Deposit : 6% Recurring Deposit : 7.5% Extra 0.5% interest for senior citizens.

6 (i) (ii) Make sure that Principal amount entered is positive numbers only. If it is not then message should be displayd in dialogue box. 1 Write the code for calculatebtn to calculate compound interest and amount and display the values in textboxes interesttf and amounttf. 3 Compound Interest = P*(1+r/100)^T Amount = Principal + Compound Interest (iii) Write th code that will clear all the textfields. 1 (c) Write a program to find if given number is even. Design appropriate interface. 3 What will be content of textarea when following code will be executed? 2 String str1= Ruksana ; String str2= Ruksaar ; jtextarea1.settext(str2.length()+str2.concat(str1).length()); Q.6 (a) Consider the tables Trainee & Trainer given below: Trainee Trainee_ID Trainee Gender Trainer_ID TE001 Pawan Male TR005 TE002 Radhika Female TR004 TE009 Ankit Male TR004 TE007 Abhishek Female TR002 TE005 Vishnu Male TR001 Trainer Trainer_ID Trainer Sports TR005 Mr Gupta Carom TR004 Mr Football Chaudhary TR003 Mr Singh Carom TR002 Mr Das Cricket TR001 Mr Sen Football Based upon above given tables, write commands in SQL for (i) and (ii) and output for (iii) given below: (i) Display the Trainee Name, Gender and corresponding Trainer Name for all Trainee. 2 (ii) Display the Trainee Name and Trainer Name of all Trainees. 2

7 (iii) Select Trainne, Gender from Trainee, Trainer 1 where Trainee.Trainer_id = Trainer.Trainer_id and sports = carom ; (iv) Name the primary keys of each table. 1 (v) What would be cardinality and degree of the cartesian product of these two tables. 2 What is the difference between Round and Truncate function? 2 (c) Define ACID properties and ROLLBACK? 2 (d) Write the output of the following queries. (i) SELECT MOD(657,9); 1 (ii) SELECT 2 SUBSTR( INTERNATIONAL,LENGTH(CONCAT( MARKET, ING )),3); Q.7 (a) What is the task of a back end? Give any one example of software bring used as back end. 1 What is a portal? Give any one example of e-governance portal with its purpose. 2 (c) Rajesh is developing his project on Customer Management for CBSE Examination. Help him to select proper controls from the list i.e Combo Box, Radio Button, Text Area, Command button and text Field for the following purpose: (1/2 X 4 = 2) (i) To show description of Item. (ii) To display item Name. (iii) To input price. (iv) To accept card type i.e Debit Card, Credit Card Visa Card,.

8 KENDRIYA VIDYALAYA NO.2 TAMBARAM, CHENNAI 73 HALF YEARLY EXAM 2015 ANSWER KEY CLASS : XII MARKS : 70 SUB : INFORMATICS PRACTICES TIME : 3 HRS Q.1 (a) Name any two properties of password control. 1 1/2 mark each for correct properties What is the purpose of break statement in a looop. 1 1 mark for correct answer with respect to loops. (c) Name the tag which is used as Section Separator. Is it a container tag? 1 1/2 mark for the tag 1/2 mark for identifying as non container tag (d) What is the final value of x? How many times will this loop execute? int count=0,x=9; 2 count=x--; do { count+=x - -; }while(x>6); 2 2 marks for correct answer with the tracing (e) Write a Java code that takes one integer type value from jtextfield1. If value is positive then display the message using a label with suitable message: Value is Positive. 2 1 mark for extracting values 1 mark for checking (f) What are the characteristics of XML? 1 1/2 mark for any two characteristics of XML (g) What are the use of the following tags- 2 <OL>, <HEAD> 1 mark for correct usage of each tag Q.2 (a) Which MySQL command will allow you to see constraints applied to a column. 1

9 1 mark for correct answer Reena created a table named student, she wants to see those students whose name ending with p. She wrote a query- SELECT name.* FROM student WHERE name= %p ; 2 1 mark for column name correction 1 mark for condition correction (c) What is primary key? How is it different from candidate key? Explain with the help of suitable example. 2 1 mark for explaining primary key 1 mark for differentiating it from candidate keys (d) Write MySql command to display the list of existing databases? 1 1 mark for correct answer (e) Write a query to create following table with appropriate primary key. 2 BANK Ac_N o Cust_Na me Amou nt Date_of_op en No_of_transac tion 1 marks for correct column creation 1/2 mark for primary key constriant 1/2 mark for correct syntax (f) A table STUDENT is having 5 rows and 3 columns (Admno, Name, Marks). What would be the cardinality and degree after execution of following commands. 2 (iii) Alter Table add mobile char (10); (iv) Delete from student; 1/2 mark each for correct degree and cardinality after each query Q.3 (a) SS Garments sells garments. They had asked their programmer to develop the following GUI in NetBeans:

10 The company offeres discount as per following rates Men : 10% Women : 5% Kids : 2% (i) Write the code to make the text fields Discount(tfDisc) and net amount(tfnetamt) uneditable. 1 1/2 mark each formaking the textfields uneditable (ii) (iii) When discount button is clicked, discount should be calculated as per the given criteria and should be displayed in the discount textfield. Also calculate the net amount and display it in the respective text field by making them editable 3 1 mark for correct extraction of values 1 mark for correct calculations 1 mark for correct display Up on clicking the EXIT button the application should be terminated. 1 1 mark for correct answer The following code has some error(s). Rewrite the correct code underlining all the corrections made: 2 int sum=0, step=5; int i; for(i=0,i=<5,i++)

11 { step+=5, sum=+step; } jtextarea1.showtext( +sum) ; 1/2 mark each for correctly identifying the errors and correcting them (c) How many times does the following loop executes: 1 x=5; y=50; while(x<=y) { x=y/x; } 2 times 1 mark for correct answer (d) Rewrite the following program code using a if-statement: 2 String remarks; int id=integer.parseint(jtextfield1.gettext()); switch(id) { case 0 : remarks= 100 % result ; break; case 1 : remarks= 50 % result ; break; case 2 : remarks= 30% results ; break; default: remarks= Invalid entry ; } 1/2 mark each for correct case conversion Q.4 (a) Write an output of the following queries. 3 (i) SELECT SQRT (100) ; (ii) SELECT SUBSTR ( RED SCHOOL JHAJJAR, 5, 3 ) ; (iii) Select CONCAT(substr( India is a great country,12,5), Indians ); 1010 SCH greatindians 1 mark each for correct answer Write the SQL Query for (i) to (vi) and output of (vii) and (viii) on the basis of table BANK given below: 7 BANK

Ac_N o Cust_Na me B_Nam e Amoun t Date_of_op en No_of_transact ion A001 Agam SBI 28000 2011-06-01 5 Shah A002 Nishant HDFC 22000 2012-07-02 7 Patel A003 Krunal ICICI 66000 2012-06-04 9 A004 Twinkle

12 Ac_N o Cust_Na me B_Nam e Amoun t Date_of_op en No_of_transact ion A001 Agam SBI Shah A002 Nishant HDFC Patel A003 Krunal ICICI A004 Twinkle HDFC A005 Jinal ICICI A006 Aaditya SBI A007 Varsha AXIS A008 Vishnu ICICI A009 Dhruv Raj UCO i. To display the number of customer in SBI who opened their account in the year ii. Display Ac_No,Amount,No_of_transaction of customers whose bank is SBI or ICICI or UCO bank. iii. Display the detail of customer whose name ends with l. iv. Display the Date _ of_ Open of oldest customer. v. Display sum of amount deposited in each bank separately. vi. Remove the detail of all customer of UCO bank. vii.select Count(distinct B_Name) from Books; viii. Select SUBSTR(Cust_Name,3,6) from BANK; 1 mark for correct query 1/2 mark for correct output Q.5 (a) Prerna is programmer at HDFC bank. To calculate the amount and interest, she has developed the following GUI in NetBeans.

13 The rate of interest is calculates are following Fixed Deposit : 6% Recurring Deposit : 7.5% Extra 0.5% interest for senior citizens. (i) Make sure that Principal amount entered is positive numbers only. If it is not then message should be displayd in dialogue box. 1 1/2 mark for checking 1/2 mark for display (ii) Write the code for calculatebtn to calculate compound interest and amount and display the values in textboxes interesttf and amounttf. 3 Compound Interest = P*(1+r/100)^T Amount = Principal + Compound Interest 1 mark for correct extraction ov values 1 mark for correct calculation (iii) Write th code that will clear all the textfields. 1 Ans : 1 mark for correct answer Write a program to find if given number is even. Design appropriate interface. 3 1 mark for appropriate interface 1/2 mark for extracting values 1 mark for checking 1/2 marks for display in appropriate control (c) What will be content of textarea when following code will be executed? 2 String str1= Ruksana ; String str2= Ruksaar ; jtextarea1.settext(str2.length()+str2.concat(str1).length()); 14 1/2 mark each for concate and length 1 mark for correct settext Q.6 (a) Consider the tables Trainee & Trainer given below: Trainee Trainee_ID Trainee Gender Trainer_ID TE001 Pawan Male TR005

14 TE002 Radhika Female TR004 TE009 Ankit Male TR004 TE007 Abhishek Female TR002 TE005 Vishnu Male TR001 Trainer Trainer_ID Trainer Sports TR005 Mr Gupta Carom TR004 Mr Football Chaudhary TR003 Mr Singh Carom TR002 Mr Das Cricket TR001 Mr Sen Football Based upon above given tables, write commands in SQL for (i) and (ii) and output for (iii) given below: (i) Display the Trainee Name, Gender and corresponding Trainer Name for all Trainee. 2 1 mark for column's list and table 1 mark for correct condition (ii) Display the Trainee Name and Trainer Name of all Trainees. 2 1 mark for column's list and table 1 mark for correct condition (iii) Select Trainne, Gender from Trainee, Trainer 1 where Trainee.Trainer_id = Trainer.Trainer_id and sports = carom ; 1 mark for correct answer (iv) Name the primary keys of each table. 1 1/2 mark each for the primary keys of tables (v) What would be cardinality and degree of the cartesian product of these two tables. 2 1 mark each for degree and cardinality What is the difference between Round and Truncate function? 2 1 mark each for two correct differences (c) Define ACID properties and ROLLBACK? 2 1/2 marks each for properties (d) Write the output of the following queries. (i) SELECT MOD(657,9); 1

15 1 mark for correct answer (ii) SELECT 2 SUBSTR( INTERNATIONAL,LENGTH(CONCAT( MARKET, ING )),3); 1/2 mark each for correct evaluation of functions Q.7 (a) What is the task of a back end? Give any one example of software bring used as back end. 1 1/2 mark for task 1/2 mark for example (c) What is a portal? Give any one example of e-governance portal with its purpose. 2 1 mark for definition 1 mark for example Rajesh is developing his project on Customer Management for CBSE Examination. Help him to select proper controls from the list i.e Combo Box, Radio Button, Text Area, Command button and text Field for the following purpose: (1/2 X 4 = 2) (i) To show description of Item. (ii) To display item Name. (iii) To input price. (iv) To accept card type i.e Debit Card, Credit Card Visa Card,. 1/2 mark each for correct answer

INDIAN LEARNERS OWN ACADEMY, KUWAIT Informatics Practices XII Holiday Homework. b. What is the importance of abstract classes in programming?

INDIAN LEARNERS OWN ACADEMY, KUWAIT Informatics Practices XII Holiday Homework 1. a. Define the term Polymorphism. What are the two ways polymorphism is demonstrated in Java? b. What is the importance