A criteria.

A relation.

A tuple.

An attribute.

Is a documentation technique.

Needs data volume and processing frequencies to determine the size of the database.

Involves modelling independent of the DBMS

Is designing the relational model.

Hash

Direct.

Sequential

All of the above.

The logical view

The physical view.

The external view.

All of the above.

The data dictionary is normally maintained by the database administrator.

Data elements in the database can be modified by changing the data dictionary.

The data dictionary contains the name and description of each data element.

The data dictionary is a tool used exclusively by the database administrator.