GATE 2005
Related Database Management PYQs
A relational schema is in Second Normal Form (2NF) if and only if it is in 1NF and:
The natural join of two relations R and S (R ⋈ S) is equivalent to:
In 2-Phase Locking (2PL), what characterizes the 'shrinking phase' of a transaction?
What is the effect of executing an aggregate function (such as AVG, SUM, COUNT) on a column containing NULL values?
If every non-trivial functional dependency X -> Y in relation R satisfies X is a superkey, then relation R is guaranteed to be in:
In SQL, which clause is used to eliminate duplicate rows from the query output?
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