## domain calculus

<*database*>

A form of relational calculus in which scalar variables take values drawn from a given domain.

Examples of the domain calculus are ILL, FQL, DEDUCE and the well known Query By Example (QBE). INGRES is a relational DBMS whose DML is based on the relational calculus.

### Nearby terms:

Domain Architecture Model ♦ **domain calculus** ♦ domain engineering

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