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What Is An Index ? How It Is Implemented In Oracle Database ? |
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Answer» An index is a database structure used by the SERVER to have direct access of a ROW in a table. An index is automatically created when a unique of primary key constraint clause is SPECIFIED in CREATE table comman (VER 7.0) An index is a database structure used by the server to have direct access of a row in a table. An index is automatically created when a unique of primary key constraint clause is specified in create table comman (Ver 7.0) |
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