Only one ____ constraint can exist for each table.

The catalog is maintained by ____.

The field ______ defines the maximum number of characters a field can contain.

When a subquery is used, ____ is(are) evaluated first.

The ________ states that no primary key attribute may be null.

A ________ view is materialized when referenced.

Object Query Language (OOL) is based on which of the following data models?

An Object-oriented database stores persistent object(s) that is/are not shared among multiple applications or programs, in a permanent storage.

Which of the following access control policies ensures a high degree of protection from malicious attacks?

Which of the following levels of the data-storage virtualization technology involves bit-level striping with dedicated Hamming-code parity?

In a database, transactions follow ACID properties. Which of the following are these properties?