INDIAN SCHOOL MUSCAT FINAL TERM EXAMINATION INFORMATICS PRACTICES

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Theodore Silvester Goodman
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1 Answer Key-Class XI INFO (Final) Roll Number Code Number 065/ INDIAN SCHOOL MUSCAT FINAL TERM EXAMINATION INFORMATICS PRACTICES CLASS: XII Sub. Code: 065 TimeAllotted:3 Hrs Max. Marks: 70 SECTION - A 1. One Advantage 1 Mark any one Disadvantage -1 Mark. Memory Explanation 1 Mark bit or byte 1 Mark 3. Explanation 1- Mark Example -1 Mark 4. (a) ALU -Arithmetic and Logical unit (b) OCR -Optical Character Reader 5. Define (a) Software -Explanation 1 Mark (b)disk Defragment- Explanation -Mark SECTION B 1. Write any two methods of jtextfield and jlabel._gettext() /settext()/seteditable()/setenabled() - any two methods 1 mark. Explanation with an example 1+1= 3. If there is no break statement in between the two case in switch it is called fall through 1 mark. Exmple 1 Mark 4. Declaring and accepting value -1 mark using if statement 1mark 1 5. Write a Java program to calculate the simple interest. si=(p*r*t)/100 Accepting values 1mark implementing formula with correct syntax- 1mark 6. Model -1 Mark 1 1/5

7. Convert the following from if to switch. if (res= =10) System.out.println( PASS with Distinction ) else if(result = =8) System.out.println( PASS ); else if(res= =4) System.out.println( Work Hard ); else System.

2 7. Convert the following from if to switch. if (res= =10) System.out.println( PASS with Distinction ) else if(result = =8) System.out.println( PASS ); else if(res= =4) System.out.println( Work Hard ); else System.out,print( Fail ); Using Proper syntax of switch - mark Answer Key-Class XI INFO (Final) 8. Using setenabled() method mark 9. int x, y; for(x=15;x<=30;x=x+5) { y = x+10; jtextarea1. append( +y); } y=130 mark 10. Read the following case study and answer the questions that follow : Karan is a programmer at Alpha Builders. To calculate wages to be paid to labourers, he has developed the following GUI in NetBeans. Male and Female labourers are respectively paid at the rate of 130/- per day and of 150/- per day. Skilled labourers are paid extra at the rate of 100/- per day. /5

3 Answer Key-Class XI INFO (Final) Write the code to do the following: (i) Calculate and display the Total Wages in the corresponding Text Field when the Calculate Wages Button is pressed. Accepting the values and implementing formula = 1 +1 = mark (ii ) Write a java code to clear all the text fields and check box. Using setext( ) and setselected(false) 1+1= mark (iii ) Write a java code to close the application. System.exit(0); 1Mark 11. While loop Entry level loop with an example 1mark Do. While Exit level loop and an example 1mark 1. Accepting the value ½ mark and using for / while/ do..while with proper statement 1 ½ mark. 1 SECTION C 1. Give the statement which she should write now to set the column ROLLNO as the Primary Key of the table? Alter table stud14 add primary key(rollno); Mark. DDL-Explanation and an example 1 Mark,DML- Explanation with an example 1 Mark Mark after adding 5 rows -7 1 Mark 4. (a) Candidate Key- Explanation 1 Mark (b) Not Null- Explanation 1 Mark 5. NAME is a column in a table SCHOOL. The SQL queries: SELECT COUNT (*) FROM SCHOOL; and SELECT COUNT(NAME) FROM SCHOOL; give the result 0 and 19 respectively. What may be the possible reason for this? How many records are present in the table: 0 (or) 19. Count(*) counts all the records including null values 1 Mark Count(name) counts only the values it will ignore the null records 1 Marks so 0 records are present in the tabvle. 3/5

4 6. The It_No and Cost columns of a table ITEM are given below: It _No Cost NULL NULL based on this information, find the output of the following queries: (i) SELECT AVG(COST) FROM ITEM; Answer Key-Class XI INFO (Final) =16000/3= Mark (ii) SELECT COST+400 FROM ITEM WHERE ITEM_NO <= 103; Mark for the correct answer Null Find the output of the following: (a) Select Truncate( , 1),Round(563.76,-1); ½ Mark (b) Select Substr( INDIA WELCOMES YOU,1,5) from dual; INDIA ½ Mark (c ) Select Dayofmonth( ); 0 ½ Mark (d) Select mod(45,5); 0 ½ Mark 8. Order By: it is used to arrange the records either in ascending or descending order of the field specified. Ex: select * from emp order by sal; 1 Mark Group By: it is used to keep all the similar records together. Ex: select deptno,count(8) from emp group by deptno; 1 Mark 9. Use Student ; 1Mark Show tables; 1 Mark 4/5

5 10. Create the table STUDENT_017 based on the following fields: Answer Key-Class XI INFO (Final) Field Name Data Type Length Constraints GRNO int 4 Primary Key Rollno int 3 St_name varchar 0 Not Null St_Class int Total_Mark int 4 Average decimal 5,1 Using proper syntax of Create table : Marks 11. Consider the following EMPL134 table. Write the MySQL queries from (a) to (g) and write the output of (h) & (j): Empno Name Job Gender Salary Deptno 806 Manish Clerk M Ranjith Manager M Anitha Clerk F Rhea CEO F Paul Manager M Karan President M Leon Clerk M a. To display all the employee names and their salary who are all Clerk. Select name,slalary from empl134 where job= clerk ; b. Decrease the salary of all the employees by % those who are all in department number10 Update empl134 set salary =salay+salary*/100 where deptno=10;. c. To display Average salary of employees are there in department 0 and 10. Select avg(salary) from empl134 where deptno=0 and deptno=10; d. To display all the Employee details whose Salary is in between 0000 and Select 8 from empl134 where salary between 0000 and 50000; e. Delete all the records whose salary is less than Delete from emp134 where salary <7000; f. Write a Query to display all the employee names, salary whose name ends with character n. Select name,salary from empl134 where name like %n ; g. Display the details of all the employees who are all not allotted for any department. Select * from empl134 where deptno is null; 5/5

6 Answer Key-Class XI INFO (Final) h. Select name, salary from employee where deptno=0; Correct output 1 mark i. Select length(name) from employee; Correct output 1 mark j. Add another column Remark Char(0) to the above table. k. Alter table empl134 add remark char(0); 1 Mark Section - D 1 Write any two Advantages -½ Mark+½ Mark=1 Mark 1 Write any two disadvantages -½ Mark +½ Mark=1 Mark 1 3. Explanation of E-Business- 1Mark Write any web site names. ½ Mark+½ Mark 4. Explanation of Front End 1 Mark 1 6/5

THE INDIAN COMMUNITY SCHOOL, KUWAIT

THE INDIAN COMMUNITY SCHOOL, KUWAIT SERIES : II MID TERM /FN/ 18-19 CODE : M 065 TIME ALLOWED : 2 HOURS NAME OF STUDENT : MAX. MARKS : 50 ROLL NO. :.. CLASS/SEC :.. NO. OF PAGES : 3 INFORMATICS PRACTICES