Need advice for using Tempory tables

Hi,
I am soort of expert in SQL programming using MS SQL and SYBASE. But I am new in ORACLE.
In SQL SERVER, using tempory tables are very simple. But it seems very different in ORACLE.
1. Can I use create several different temp tables in a stored procedure?
2. Dose the temp table has to be named as Temp_tablename?
3. After executing the stored procedure, will those temp tables disappear automnatically? Should I manually clean them up?
Thank you for help in advance.
Karl

1. Yes. You need to use Dynamic SQL within your PL/SQL code to issue any DDL command.
2. You can name those temp tables whatever name you want.
3. You need to issue "DROP table XXX" command to remove those temp tables. Why not use PL/SQL table within you PL/SQL code since PL/SQL is a memory construct and it will only exist during the run time of your PL/SQL code.
Jack

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