The following table shows some of the TCL commands and their examples: 6. Conclusion In this article, we’ve explored the different categories of SQL commands: DDL, DML, DCL, and TCL, and their respective functionalities. Understanding these categories is essential for effectively managing and man...
Data Definition Language (DDL) - The Data Definition Language is the sublanguage responsible for defining the way data is structured in a database. In SQL, this corresponds to manipulating tables through the CREATE TABLE, ALTER TABLE, and DROP TABLE Data Control Language (DCL) - The Data Cont...
LOCK TABLE - control concurrency DCL is Data Control Language statements. Some examples: COMMIT - save work done SAVEPOINT - identify a point in a transaction to which you can later roll back ROLLBACK - restore database to original since the last COMMIT SET TRANSACTION - Change transaction opti...
Whenever a certain action is performed at the front end of an application, a corresponding CRUD (Create, Retrieve, Update and Delete) action gets invoked at the back end. A tester will have to check if the right action is invoked and whether the invoked action in itself is successful or n...
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