Indexes
6 practice questionsDatabase SystemsStep-by-step solutions
Try a few
1
Adding an index to a database column primarily:
A.Slows down all queries
B.Speeds up data retrieval (read queries)
C.Deletes duplicate rows
D.Encrypts the column
2
A disadvantage of adding many indexes to a table is that they:
A.Speed up all writes
B.Slow down inserts/updates and use extra storage
C.Reduce read speed
D.Delete data
3
A drawback of adding many indexes is that they slow down:
A.SELECT queries
B.Inserts and updates
C.Joins
D.Backups only
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