GATEverse Practice, past papers & mock tests
GATE 2024 · session-1
Database Management and WarehousingRelational AlgebramediumMCQ1 mark
Consider a database that includes the following relations: Defender(name, rating, side, goals), Forward(name, rating, assists, goals), Team(name, club, price). Which ONE of the following relational algebra expressions checks that every name occurring in Team appears in either Defender or Forward, where Ø denotes the empty set?
Save your progress

Related Database Management and Warehousing PYQs