1.

Which of the given options define a transaction correctly?

A. A transaction consists of DDL statements on the database schema.
B. A transaction consists of COMMIT or ROLLBACK in a database session.
C. A transaction consists of either a collection of DML statements or a DDL or DCL or TCL statement to form a logical unit of work in a database session.
D. A transaction consists of collection of DML and DDL statements in different sessions of the database.
Answer» D. A transaction consists of collection of DML and DDL statements in different sessions of the database.


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