Transactions Exhibit four main Characterstics : Automicity , Consistency, Isolation, and Durability .

Automicity
Automicity implies that a Transaction will be treated as a single unit of work, as we discussed above ,
a Transaction could have several steps , all these should be considered as Single unit and the Transaction
would be either successful (COMITT)  or failed (ROLLBACK), should not have any partial comitts. When each step of
the transaction is completed successfully then that Transaction would be considered as Success (COMITT),
if any single step failure could mark entire Transaction as Failed (ROLLBACK).

Consistency
Consistency guarantees that the Transaction will leave the system and data in consistent state.We say the data is in
consistent state when it adheres to the Constaints , or Rules, of the Database.

Isolation 
Isolation guarantees , the data that a transaction accesses will not be affected by any other changes made by other
Transactions until the First transaction completes.

Durability
The Durabilty property specifies that when a transaction is comitted , any changes to data that it made should be persisted
to a permanent storage.

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