Word:

relational algebra

(database, theory)relational algebra - A family of algebra with a well-founded semantics used for modelling the data stored in relational databases, and defining queries on it. The main operations of the relational algebra are the set operations (such as union, intersection, and cartesian product), selection (keeping only some lines of a table) and the projection (keeping only some columns).

The relational data model describes how the data is structured.

Codd's reduction algorithm can convert from relational calculus to relational algebra.
Browse
relapsing fever
Relate
Related
related to
Relatedness
Relater
relatiative
Relatio est fictio juris et intenta ad unum
Relatio semper fiat ut valeat dispositio
Relation
relation back
Relation never defeats collateral acts
Relation shall never make good a void grant or devise of the party
relation to
Relational
relational adjective
-- relational algebra --
relational calculus
relational data model
relational database
relational database management system
relational DBMS
relational language
relational model
Relationist
relations
Relationship
Relationships
Relatiorum cognito uno
Relative
relative atomic mass
relative clause
relative density
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