Which statements are correct regarding indexes?
(a) When a table is dropped, the corresponding indexes are automatically dropped
(b) For each DML operation performed, the corresponding indexes are automatically updated
(c) A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically creates a unique index
(d) All of the mentioned
I had been asked this question during an online interview.
Question is from Insertion Deletion Predicate Reads topic in section Concurrency Control of Database Management
