SYS_REFERENTIAL_CONSTRAINTS

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The SYS_REFERENTIAL_CONSTRAINTS table contains additional information about foreign keys. It has the following columns:

Column Name	Data Type	Description
CONSTRAINT_CATALOG	VARCHAR(128)	Top-level container for constraints. Not used in dotConnect for QuickBooks Online. Always NULL.
CONSTRAINT_SCHEMA	VARCHAR(128)	Second-level container for constraints. Not used in dotConnect for QuickBooks Online. Always NULL.
CONSTRAINT_NAME	VARCHAR(128)	The name of the foreign key constraint.
UNIQUE_CONSTRAINT_CATALOG	VARCHAR(128)	Top-level container for referenced constraints. Not used in dotConnect for QuickBooks Online. Always NULL.
UNIQUE_CONSTRAINT_SCHEMA	VARCHAR(128)	Second-level container for referenced constraints. Not used in dotConnect for QuickBooks Online. Always NULL.
UNIQUE_CONSTRAINT_NAME	VARCHAR(128)	The name of the referenced constraint.
MATCH_OPTION	VARCHAR(7)	Always "NONE". Not used in dotConnect for QuickBooks Online.
UPDATE_RULE	VARCHAR(9)	Always "NO ACTION". Not used in dotConnect for QuickBooks Online.
DELETE_RULE	VARCHAR(9)	Action to perform when SQL statement violates this referential constraint. Can have one of the following values: NO ACTION - the DELETE on the referenced primary key will not affect the foreign key. CASCADE - the DELETE on the referenced primary key will cause the cascade DELETEs of all the records, having the same values of the foreign key.
OBJECT	VARCHAR(128)	The name of the table, this foreign key belongs to.
FIELD	VARCHAR(128)	The foreign key column.
RELATED_OBJECT	VARCHAR(128)	The name of the table, this foreign key references.
RELATED_FIELD	VARCHAR(128)	The name of the field, this foreign key references. Always "ID"

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