______ is the special attribute value that indicates an unknown or missing value.

The stored data is ______ for necessary transformation to generate final reports.

An Entity Type is described by a set of attributes called___________

A ________ is a shared collection of interrelated data tables, files or structures, which are designed to meet the varied informational needs of an organisation.

_________ is a conceptual entity that is meant ot express various accounts, each of which belongs to a paticular category of accounts.

The ____________ attributes can be divided into smaller sub-parts to represent some more basic attributes with independent meanings.

__________ is a collection of programs that enables users to create and maintain a database.

Anything in the real world with independent existence is called____________

____________ involves the technique of collecting, sorting, relating, interpreting and computing data items.

The major elements of _________ are entities, attributes, identifiers and relationships that are used to express a reality for which a database is to be designed.