Re: Newbie Constraint ?
От | Bricklen Anderson |
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Тема | Re: Newbie Constraint ? |
Дата | |
Msg-id | 45A2B204.7080805@presinet.com обсуждение исходный текст |
Ответ на | Re: Newbie Constraint ? ("Jeanna Geier" <jgeier@apt-cafm.com>) |
Список | pgsql-general |
Jeanna Geier wrote: > Hello List! > > OK, so I'm new to SQL and Postgres and am working on taking over this DB > work, and ran across a command that I'm not sure of and am wondering if you > can help me with... Probably a basic SQL question, but thought more than one > person on here would be able to point me in the right direction!! > > In on of the tables in the DB, there is a constraint defined that I'm not > familiar with: > > CONSTRAINT "Relationship182" FOREIGN KEY (elementid) > REFERENCES element (elementid) MATCH SIMPLE > ON UPDATE CASCADE ON DELETE CASCADE > > > Not quite sure what the: CONSTRAINT "Relationship182" is exactly... can > anyone help me with this one? Haven't seen this one yet... > That's the constraint name. More detailed here: http://www.postgresql.org/docs/8.1/interactive/sql-createtable.html
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