integrity_rule Struct Reference

Database integrity rule definition for a field. More...

#include <tripapi_types.h>

Public Attributes
char *	key_field
char *	link_database
char *	link_field
int	on_delete
int	on_update
int	type

Detailed Description

Database integrity rule definition for a field.

The on_delete and on_update values can have the following values:

Symbol	Value	Description
INTEGRITY_RESTRICT	1	Prohibit the action as long as there are dependent records
INTEGRITY_CASCADE	2	For on_update, update also the dependent record. For on_delete, delete also dependent record.
INTEGRITY_NOACTION	3	Allow the operation to proceed
INTEGRITY_SETNULL	4	Set the dependent record's field to NULL
INTEGRITY_SETDEFAULT	5	Set the dependent record's field to its defaut value

Member Data Documentation

key_field

char* integrity_rule::key_field

Field name in dependent database

link_database

char* integrity_rule::link_database

Master database

link_field

char* integrity_rule::link_field

Field in master database

on_delete

int integrity_rule::on_delete

Behavior when master records are deleted

on_update

int integrity_rule::on_update

Behavior when master records are updated

type

int integrity_rule::type

0 for source of link, 1 for target of link

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The documentation for this struct was generated from the following file:

• tripapi_types.h