GATE CS 2024 Question - Wise Solutions | DBMS | Cross Product
The relation schema, Person (pid, city), describes the city of residence for every person uniquely identified by pid. The following relational algebra operators are available: selection, projection, cross product, and rename.
To find the list of cities where at least 3
persons reside, using the above operators, the minimum number of cross product operations that must be used is
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