What is atomicity in dbms?

In database practices, atomicity is an ACID (Atomicity, Consistency, Isolation, Durability) transaction features. An atomic transaction is an indivisible and fundamental series of database transactions such that either all occur, or nothing happens and a guarantee of atomicity halts updates to the database occurring only partially, which can provoke greater problems than rejecting the entire series outright. As an outcome, the transaction cannot be recognized to be in progress by another database user.