A theorem with the same namesake as those rules establishes the equivalence of two calculi and an algebra all described by this adjective.
Rules concerning the storage of integrity constraints in the catalog and the ability to update views are among a set of twelve rules defining a system described by this adjective. A theorem with the same namesake as those rules establishes the equivalence of two calculi and an algebra all described by this adjective. The algebra with this name underpins a model described by E. F. Codd which is contrasted with the hierarchical and network models. Things that implement the model of this name can be normalized by limiting functional dependencies and support operations like (*) projection, selection and natural join as part of an algebra with this name. Things that implement this model consist of tuples organized into tables with fixed schema which can then be queried. For 10 points, give this word that describes the most common type of database, a word which, in mathematics, simply refers to a subset of a Cartesian product.
Rules concerning the storage of integrity constraints in the catalog and the ability to update views are among a set of twelve rules defining a system described by this adjective.
relational [model or database or algebra or calculus]