Subject | Re: [IBO] Foreign Key |
---|---|
Author | guido.klapperich@t-online.de |
Post date | 2001-04-03T13:03:16Z |
> No, don't define them formally as Foreign keys. You will get 6 relationships with low selectivity indexes and it will kill performance.Hi Helen
>
> Only use the FOREIGN constraint for master-detail or parent-child (tree) relationships. Hand-code the cascade triggers for lookup relationships such as those you mention.
>
I thought the relationships between customers and the six tables are master-detail relationships.
Guido.