tuple calculus (database) A form ofrelational calculusin which a variable's only permitted values are tuples of a givenrelation. Codd's unimplemented languageALPHAand the subsequentQUELare examples of the tuple calculus. This article is provided by FOLDOC - Free Online Dictionary of Computing (fo...
Tuple relational calculusA paraconsistent database is one in which information may be incomplete and/or inconsistent. A data model that does not attempt to eliminate such incompleteness or inconsistency, but rather is capable of functioning in their presence, has recently been developed. ...
网络元组关系演算;关联微积演算;关联微积分 网络释义
Tuple Relational CalculusRelational Calculusdoi:10.1007/978-0-387-39940-9_3894Hans HinterbergerJosep Domingo-FerrerVipul KashyapVijay KhatriRichard T. SnodgrassPaolo TerenzianiManolis KoubarakisYue ZhangJames B. D. JoshiJohann Gamper
tuple() in Python | Python tuple() Function with Examples with Examples on Python, Built in, Functions, abs Function, all Function, bin Function, bool Function, python Functions, new sum Function, bytes Function, new callable Function etc.
Tuple relational calculusSummary: A paraconsistent database is one in which information may be incomplete and/or inconsistent. A data model that does not attempt to eliminate such incompleteness or inconsistency, but rather is capable of functioning in their presence, has recently been developed. In...
Revisiting the Definition of the Relational Tuple CalculusThe tuple relational calculus has been based on the classical predicate logics. Databases are however not exactly representable in this calculus. They are finite. This finiteness results in a......