What command removes triggers?

What command removes triggers?

Which statement is used to remove a trigger? Explanation: In order to delete a trigger, the DROP TRIGGER statement is used.

Can we DELETE a trigger in Oracle?

Use the DROP TRIGGER statement to remove a database trigger from the database. The trigger must be in your own schema or you must have the DROP ANY TRIGGER system privilege. To drop a trigger on DATABASE in another user’s schema, you must also have the ADMINISTER DATABASE TRIGGER system privilege.

How do you remove a trigger?

To delete a DML trigger

  1. In Object Explorer, connect to an instance of Database Engine and then expand that instance.
  2. Expand the database that you want, expand Tables, and then expand the table that contains the trigger that you want to delete.
  3. Expand Triggers, right-click the trigger to delete, and then click Delete.

How do you view the code of a trigger in Oracle?

Second, there is a simple query you can run to get the code for a trigger, it is: SELECT dbms_metadata. get_ddl(‘TRIGGER’, ‘TRIGGER_NAME’, ‘SCHEMA_NAME’) FROM DUAL; Just replace ‘TRIGGER_NAME’ with the actual name of your trigger.

Can we remove trigger if yes how?

You can remove a DML trigger by dropping it or by dropping the trigger table. When a table is dropped, all associated triggers are also dropped.

Can a trigger written for a view?

Yes you can write triggers on views.

How do you create a trigger delete in Oracle?

CREATE TABLE orders ( order_id number(5), quantity number(4), cost_per_item number(6,2), total_cost number(8,2) ); We could then use the CREATE TRIGGER statement to create an BEFORE DELETE trigger as follows: TIP: When using SQLPlus, you need to enter slash on a new line after the trigger.

How can we view all the triggers currently in the database?

SHOW TRIGGERS lists the triggers currently defined for tables in a database (the default database unless a FROM clause is given).

How do I see triggers in SQL Developer?

If you want to see the code of the trigger body, then the best way is probably to right-click on the trigger and select Single Record View from the pop-up menu.

Which column in the User_triggers data dictionary view shows that the trigger in a PL SQL triggers Type column Action_type column Data_type column none of these?

The ACTION_TYPE column of the USER_TRIGGERS data dictionary view shows that the trigger is a PL/SQL trigger.

How do I delete a sequence in Oracle?

The syntax to a drop a sequence in Oracle is: DROP SEQUENCE sequence_name; sequence_name. The name of the sequence that you wish to drop.

What happens when a trigger is associated with a view?

By using INSTEAD OF triggers, we can change the behavior of INSERT, UPDATE and DELETE statements for a given view. In other words, we can perform certain validations before making a change to the data. With the combination of a view and a trigger you can create row and cell level security on tables.

How to disable and enable triggers in Oracle?

DML statements are executed ( INSERT,UPDATE,DELETE) against an associated table

  • Certain DDL statements are executed (for example: ALTER,CREATE,DROP) on objects within a database or schema
  • A specified database event occurs (for example: STARTUP,SHUTDOWN,SERVERERROR)
  • How to use instead of for trigger in Oracle?

    Row Triggers and Statement Triggers. A row trigger is fired each time the table is affected by the triggering statement.

  • BEFORE and AFTER Triggers. When defining a trigger,you can specify the trigger timing— whether the trigger action is to be run before or after the triggering statement.
  • INSTEAD OF Triggers.
  • Triggers on System Events and User Events.
  • How do you delete trigger?

    You can remove a DML trigger by dropping it or by dropping the trigger table. When a table is dropped, all associated triggers are also dropped. When a trigger is dropped, information about the trigger is removed from the sys.objects , sys.triggers and sys.sql_modules catalog views.

    How do I create an oracle trigger?

    A data manipulation language (DML) statement executed against a table e.g.,INSERT,UPDATE,or DELETE.

  • A data definition language (DDL) statement executes e.g.,CREATE or ALTER statement.
  • A system event such as startup or shutdown of the Oracle Database.
  • A user event such as login or logout.