A synonym cannot be the base object for another synonym, and a synonym cannot reference a user-defined aggregate function.The binding between a synonym and its base object is by name only. However, by dropping a synonym, you run the risk of leaving dangling references to the synonym that was dropped. If you have a default schema that you do not own and want to create a synonym, you must qualify the synonym name with the name of a schema that you do own.For example, if a synonym references a base object that is a table and you insert a row into the synonym, you are actually inserting a row into the referenced table.
You can GRANT, DENY, REVOKE all or any of the following permissions on a synonym: When you are working with synonyms in the contexts previously stated, the base object is affected.
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