relational data model

relational data model
relational model

   <database> (Or "relational model") A {data model} introduced
   by {E.F. Codd} in 1970, particularly well suited for business
   data management.  In this model, data are organised in
   {tables}.  The set of names of the columns is called the
   "schema" of the table.

   Here is an example table with the schema (account number,
   amount) and 3 lines.

    account number     amount
    --------------  ---------
    12343243546456  +30000.00
    23149875245824   +2345.33
    18479827492874    -123.25

   The data can be manipulated using a {relational algebra}.
   {SQL} is a standard language for talking to a database built
   on the relational model (a "{relational database}").

   ["A relational model for large shared data banks"
   Communications of ACM 13:6, pp 377-387].

   (1998-10-05)