GATE 2007
Which of the following relational calculus languages is based on first-order predicate logic with variables ranging over individual tuples?
The ACID property that guarantees that all updates performed by a committed transaction survive system crashes and power failures …
A primary index is created on a database file when the file is ordered on:
A relation R is in BCNF if for every functional dependency X -> Y:
The lost update problem in database concurrency control is caused primarily by:
A schedule in which each transaction reads only changes committed by earlier transactions is called:
Which relational algebra operation corresponds to vertical partitioning or selecting specific columns?
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