Can anyone explain me the commit statement in sql server.Please clarity my doubts. [Resolved]

1)Query1

Delete from Employee where EmployeeID=3;

2)Query2
Begin Transaction
Delete from Employee where EmployeeID=3;
Commit Transaction

Query1 - I saw the results after executing the first query with the select statement.It's deleting the record.

Query2 - It's also doing the same operation.What is the real difference?

[Resolved]