Defining Teradata Table Triggers

The following properties are applicable to a Teradata Table Trigger object.

Tab

Property

Description

Additional Information
  Name Specifies the name of the trigger  
  Database Specifies the database or user to which the trigger belongs  
  Insert Specifies whether to execute the trigger on INSERT  
  Delete Specifies whether the trigger is executed on UPDATE  
  Update Specifies whether the trigger is executed on DELETE  
  Fire Specifies when the table trigger is executed

Before: Indicates that the trigger is executed before the occurrence of the trigger event

After: Indicates that the trigger is executed after the occurrence of the trigger event
  Trigger Fire Order Specifies the order to fire the triggers  
  Enabled State Specifies the status of the trigger

Enabled: Indicates that the trigger is enabled

Disabled: Indicates that the trigger is disabled
  Use Replace Syntax Specifies whether the REPLACE syntax is used Selecting this option replaces the syntax with the new DDL that is generated during Forward Engineering
  Generate Specifies whether a DDL statement is generated for the table trigger during forward engineering  
General Scope Specifies the scope of the trigger

Statement: Indicates that the trigger fires for each qualified statement

Row: Indicates that the trigger fires for each qualified row
New Specifies the name to use to reference the post-change data in the table You can use the %RefClause macro to include the REFERENCES clause in the trigger.
New Table Specifies the name for the new row  
Old Specifies the name to use to reference the pre-change data in the table You can use the %RefClause macro to include the REFERENCES clause in the trigger.
Old Table Specifies the name of the old row  
When Clause Specifies the condition on when to trigger  
Old New table Specifies the name of the old new transition table  
Old Value Specifies an alias to reference specific old value columns of the row in the old new transition table  
New Value Specifies an alias to reference specific new value columns of the row in the old new transition table  
Valid-Time Qualifier Specifies the valid-time qualifier to define temporal properties

Current Valid-Time: Indicates that the query applies to only data that is currently in effect

Sequenced Valid-Time: Indicates that the query applies to only data that is in effect for a specified time period

Non-Sequenced Valid-TIme: Indicates that the tables are treated as non-temporal, and valid-time dimension is ignored
Transaction-time Qualifier Specifies whether the trigger is non-temporal in the transaction-time dimension

Non-Temporal: Indicates that the transaction-time qualifier is non-termporal.

Available only when Valid-Time Qualifier is Current.
Referential Integrity Constraints Specifies the relationships and tables associated with the trigger  
Trigger Update Specifies the valid columns that can have a trigger fired when updated Available when the trigger is set to execute on UPDATE
Code   Specifies the template code of the trigger that can include SQL statements and macros  
Expanded Expanded Code (Read Only) Specifies the expanded code of the trigger  
Context Specifies the table or view for which the expanded code must be generated  
Comment   Specifies comments about the trigger object