Network or database calls are made when joining more than one table

Hi Friends,
could anybody please let me know how may networks are called when joining more than one table.
Thanks
Rinky

Hi Rinky,
  Normally when a JOIN between two database tables is made then following steps occur:-
1) The control goes to database. Based on the JOINING and WHERE condition, an internal table is created in the DATABASE only which is filled. So here the computation is done at DATABASE level.
2) Once the internal table is filled at database level, it is sent back to the application level.
A Join operation normally minimizes the round trips to the database as most of the computation is done at database level only and results sent back to the Application layer.
<b>Thus for a simple JOIN OPERATION makes a single DATABASE call.</b>
NOTE: If you are satisfied with the explanation, then please reward points
           accordingly :).
Thanks and regards,
Ravi .

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