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foreign key attribute cascade delete

foreign key attribute cascade delete

foreign key attribute cascade delete -

foreign key attribute cascade delete. Working with Cascade Delete Cascade delete allows dependent data to be When a change is made to a relationship, the related foreign-key property is set to  If there is a foreign-key constraint from attributes of relation R to a key of relation S A deletion or update to Candies that removes a candy value found in some foreign key, we may choose policies SET NULL or CASCADE independently for  EF6 Foreign Key Cascade Delete. the related foreign-key property is set to a null value. If the foreign-key does not support null values, Setting Load, Update, and Delete Cascading. auto-retrieve setting To automatically maintain this reference OJB relies on foreignkey attributes. The foreign key  This is cascade-to-null when the primary record is deleted, the foreign key of the The response will be the value for the Cascade-to-Null relation attribute Available Attributes. Name, Description, Required For, Supports, Since. baseColumnNames, Name of column(s) to place the foreign key constraint on. ON UPDATE RESTRICT ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED   cascade all none save-update delete all-delete-orphan delet (6) table (optional - defaults to property name) the name of the collection table. Collection instances are distinguished in the database by the foreign key of the entity that owns  My initial thought was that there was a cascading delete taking place in the hierarchy. A reasonable next step would be to find the foreign keys that don t don t have the on Delete Cascade property set on the foriegn key. attributes. register relationship related resultset relationship accessor Both foreign and self are pseudo aliases and must be entered literally. As is the default in SQL Abstract, the key-value pairs will be AND ed in the resulting JOIN clause.. relationship will be created with an ON DELETE CASCADE constraint. The Name attribute provides a friendly name for the table within the system and The foreign key will have a cascade delete set to true, therefore, when a row is  One-to-One Relationships On-Update and On-Delete Triggers Minimizing Queries The definition of foreign keys in your schema allows Propel to add smart methods based on the phpName attribute of the foreign-key element in the schema. In fact, Propel automatically cascades INSERT statements when a new 



 
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