What are triggers, and when would you use them?
Answers were Sorted based on User's Feedback
Answer / nashiinformaticssolutions
A trigger is a block of PL/SQL code automatically executed in response to certain events (e.g., INSERT, UPDATE, DELETE) on a table.
Example Trigger:
CREATE OR REPLACE TRIGGER EmployeeAudit
AFTER INSERT ON employees
FOR EACH ROW
BEGIN
INSERT INTO audit_log(employee_id, action, action_date)
VALUES (:NEW.id, 'INSERT', SYSDATE);
END;
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / glibwaresoftsolutions
A trigger is a block of PL/SQL code automatically executed in response to certain events (e.g., INSERT, UPDATE, DELETE) on a table.
Example Trigger:
CREATE OR REPLACE TRIGGER EmployeeAudit
AFTER INSERT ON employees
FOR EACH ROW
BEGIN
INSERT INTO audit_log(employee_id, action, action_date)
VALUES (:NEW.id, 'INSERT', SYSDATE);
END;
| Is This Answer Correct ? | 0 Yes | 0 No |
A trigger is a block of PL/SQL code automatically executed in response to certain events (e.g., INSERT, UPDATE, DELETE) on a table.
Example Trigger:
CREATE OR REPLACE TRIGGER EmployeeAudit
AFTER INSERT ON employees
FOR EACH ROW
BEGIN
INSERT INTO audit_log(employee_id, action, action_date)
VALUES (:NEW.id, 'INSERT', SYSDATE);
END;
| Is This Answer Correct ? | 0 Yes | 0 No |
Explain the usage of WHERE CURRENT OF clause in cursors ?
what is an associative array with example?
What are the different tcl commands in sql?
How do I run a sql query in pgadmin 4?
Does inner join return duplicate rows?
Is there a 64 bit version of ssms?
How do I order by ascending in sql?
What is a nested table in word?
What is Temp Table and type of temp table?
what are Dynamic SQL statements?
Is oracle sql free?
What is localdb mssqllocaldb?
Oracle (3253)
SQL Server (4518)
MS Access (429)
MySQL (1402)
Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)
DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)
Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)
Database Management (1411)
Databases AllOther (288)