hi Dharambir,
Follow these Steps:
1. go to tcode se11.
2. here enter the table name preceding z eg.ztablename
3.select create button
enter the description,data class and all necessary information to create the table
after that you have to enter some values in your created table
for that go to tcode sm30
and here you will be followed to enter new entries.
for more info search on www.****************
reward points if helpful
best of luck