Tcode SE11, SE14 to create table in many types including their indexes. You should activate the created tables before using them in SAP program or transaction.
Force Conversion: when moving a table to right tablespace. The menu is SE14, extra, forec convertion.
drop tabel/index : means deleting table or index structure. use SE14 tcod
Other operation: Reconstruct a table, activate a table
Othe transaction codes: SE16, SM30, SM31 display or maintain table contents (row of data, records)
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