One Stop GATE Forum: IT TEST ID 04

Message

    52. Which of the following correctly represents grammar that is having equal number of ‘a’ and ‘b’? 

Answer is giving (C): Both (A) and (B). 

But option (A) generates string in which number of ‘a’ and ‘b’ are not equal. 
For ex: abb,bba 
Doubt in answer.... 

56. The relation schema R(A,B,C,D) has the following functional dependencies: 

AB->D 
BC->D 
A->C 
C->A 
The highest normal form of the relation schema: 

Answer is giving (B): 3NF 

However I can’t even be able to prove that it is in 2NF…. 
means I can’t be able to get fully functional dependency among non prime attributes and primary key… 
So plz somebody help me… 

Author	Message
manju Senior Member Joined: 20Feb2007 Online Status: Offline Posts: 221	Topic: IT TEST ID 04 Posted: 23Feb2007 at 1:01pm
	52. Which of the following correctly represents grammar that is having equal number of ‘a’ and ‘b’? Answer is giving (C): Both (A) and (B). But option (A) generates string in which number of ‘a’ and ‘b’ are not equal. For ex: abb,bba Doubt in answer.... 56. The relation schema R(A,B,C,D) has the following functional dependencies: AB->D BC->D A->C C->A The highest normal form of the relation schema: Answer is giving (B): 3NF However I can’t even be able to prove that it is in 2NF…. means I can’t be able to get fully functional dependency among non prime attributes and primary key… So plz somebody help me… Post Resume: Click here to Upload your Resume & Apply for Jobs

	IP Logged


One Stop GATE Forum : GATE AT A GLANCE : Test Series

Topic: IT TEST ID 04