(databases) A database model that is based on first-order predicate logic.

plural of relational antonym

plural of binary relation

(linguistics) Any of various possible semantic relations between a verb and its arguments.

plural of blood relation

(mathematics) an equation that recursively defines a sequence; each term of the sequence is defined as a function of the preceding terms.

plural of equivalence relation

public relations (in attributive use)

(Marxism) The sum total of social relationships that people must enter into in order to survive, produce, and reproduce their means of life.

Something seen as inferior.