Here I am sharing the solved question paper of CBSE Class XII - Computer Science Exam

What do you understand by Selection & Projection operations in relational algebra?

Write SQL commands for the following statements:
(i) To display the details of all EMPLOYEEs, in descending order of DOJ
(ii) To display NAME and DE51G of those EMPLOYEEs, whose 5ALGRADE
is either 502 or 503
(iii) To display the content of all the EMPLOYEEs table, whose DOJ is in
between'09-Feb-2006' and '08-Aug-2009'.

Yerify the following using Truth Table: 2
X+Y. Z=(X+Y).(X+Z)






Rest of the Questions are attached in below file which is free of cost

Attached Files

	CBSE Class XII Computer Science Exam Solved Paper.pdf (537.0 KB, 108 views)
	CBSE Class XII Computer Science Exam Solved Paper-2.pdf (256.3 KB, 84 views)