dinsdag 3 mei 2011

Relations and DeleteActions

Relations
To be placed on Child table, or defined on EDT.
Indicates a Foreign Key relation: Child table uses data defined in Master table

DeleteActions
To be placed on Master table.
Indicates what should happen to Child records when the Master record is deleted.
Restricted = don’t delete Master record if Child records still exist.
Cascade = delete Child records when Master record is deleted.

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