What type of SQL commands would be used for managing transactions and ensuring rollbacks?

• A. Data Manipulation Language
• B. Transaction Control Language
• C. Data Definition Language
• D. Structured Query Language

Answer: (B)

Transaction Control Language (TCL) is specifically designed for managing transactions in an SQL database. It allows you to control the behavior of transactions, which include processes such as committing transactions to save changes made during a transaction or rolling back transactions to undo changes if an error occurs. This capability is crucial for maintaining data integrity and ensuring that incomplete transactions do not compromise the overall state of the database.

In contrast, Data Manipulation Language (DML) is used for querying and modifying data (e.g., SELECT, INSERT, UPDATE, DELETE), but it does not specifically address transaction management or rollback capabilities. Similarly, Data Definition Language (DDL) is focused on defining and changing the structures of database objects (like creating tables), not on controlling transactions. Lastly, while Structured Query Language (SQL) encompasses both DML and DDL, as well as TCL, it is a broader term that does not refer exclusively to transaction management.

Therefore, the correct answer highlights the specialized role of Transaction Control Language in ensuring robust transaction control and management within a database environment.