(A) tuple
(B) attribute
(C) entity
(D) degree
If every non key attrebute is functionaly dependent on the primary key then the relation will be in?
(A) first normal form
(B) second normal form
(C) third normal form
(D) fourth normal form
Given Relations R(w,x) and S(x,y) the result of SELECT DISTINCT w,x FORM R,S is guaranted to be same as R,if?
(A) R has no duplicates and S is non-empty
(B) R and S has no duplicates
(C) S has no duplicates and R is non-empty
(D) R and S has same numbers of tuples
The concept of locking can be used to solve the problem?
(A) lost update
(B) uncommitted dependency
(C) inconsistant data
(D) All the three
Which normal form is considerd adequate for rational database design?
(A) 2NF
(B) 3NF
(C) 4NF
(D) BCNF
In which of the following parameters passing mechanisms, the actual argument has to be variable:
(A) Pass by value
(B) Pass by result
(C) Pass by value-result
(D) Pass by reference
An ordinary calculator treats all operators:
(A) to be of equal precedence and associating to right
(B) to be of equal precedence and associating to left
(C) to be of unequal precedence and associating to left
(D) in the usual mathematical sence
Val is a well known:
(A) real time language
(B) object oriented language
(C) command language
(D) data flow language