Effects of the DROP TABLE Statement
Use the DROP TABLE statement with caution. When you remove a table, you also delete the data stored in it, the indexes or constraints on the columns (including all the referential constraints placed on its columns), any local synonyms assigned to it, any triggers created on it, and any access privileges granted on the table. You also drop all views based on the table and any violations and diagnostics tables associated with the table.
DROP TABLE does not remove any synonyms for the table that were created in an external database. To remove external synonyms for the dropped table, you must do so explicitly with the DROP SYNONYM statement.
You can prevent users from specifying a synonym in DROP TABLE statements by setting the USETABLENAME environment variable. If USETABLENAME is set, an error results if any user attempts to specify DROP TABLE synonym.