MetaForeignKeyPolicy

Description:

[ CCode ( cprefix = "GDA_META_FOREIGN_KEY_" , has_type_id = false ) ]
public enum MetaForeignKeyPolicy

Defines the filtering policy of a foreign key when invoked on an UPDATE or DELETE operation.


Namespace: Gda
Package: libgda-5.0

Content:

Enum values:

  • CASCADE - policy is to delete any rows referencing the deleted row, or update the value of the referencing column to the new value of the referenced column, respectively
  • NONE - not enforced policy
  • NO_ACTION - return an error, no action taken
  • RESTRICT - same as GDA_META_FOREIGN_KEY_NO_ACTION, not deferrable
  • SET_DEFAULT - policy is to set the referencing column to its default value
  • SET_NULL - policy is to set the referencing column to NULL
  • UNKNOWN - unspecified policy