Questions from Database Systems

Q: Give an example of an expression defining a materialized view and two

Give an example of an expression defining a materialized view and two situations (sets of statistics for the input relations and the differentials) such that incremental view maintenance is better than...

Q: List the ACID properties. Explain the usefulness of each.

List the ACID properties. Explain the usefulness of each.

Q: Suppose that in addition to the operations read and write, we

Suppose that in addition to the operations read and write, we allow an operation prod read(r, P), which reads all tuples in relation r that satisfy predicate P. a. Give an example of a schedule using...