| 单词 | referential integrity |
| 释义 | > as lemmasreferential integrity referential integrity n. Computing (in relational databases) consistency between tables that contain coupled data, so that cross-references between data remain valid and intact when information held in these databases is updated. ΚΠ 1980 Information Processing Lett. 11 171/1 Since all attribute values of compound keys must occur in other base relations as primary key values (according the rule of referential integrity), compound keys may be conceived as (derivable) properties. 1993 Computing 2 Sept. 22/4 Referential integrity ensures, for instance, that employees belong to a department which in turn cannot be deleted if it still has employees. 2007 M. MacDonald Access 2007 v. 156 As in the real world, relationships impose certain restrictions. In the database world, these rules are called referential integrity. < as lemmas |
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