Computer Science · Database Management Systems
Which property is true for the standard Project (π) operator in Relational Algebra?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1It can only operate on primary key columns.
- 2It preserves the total number of rows exactly as the input table in all cases.
- 3It eliminates duplicate tuples by default to maintain set properties.✓
- 4It cannot combine with other relational algebra operators.
Correct answer
It eliminates duplicate tuples by default to maintain set properties.
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