If you choose to use a vocabulary's namespace as the default namespace for a schema, you do not have to qualify any references to customized objects in the ____ namespace.

You cannot store a mixture of __________ in an array.

Fill in the blank(s) with the appropriate word(s).

Transaction processing enables a program to treat a database operation, or set of operations, as single operation. This is known as a(n) ________ or a(n) ________.

a. atomic operation, unique operation. b. unique operation, transaction. c. atomic operation, transaction. d. None of the above.