Indexes are using the increase the performance in retrival of data access from database. The primary key fields are key fields of the table and point to non key fields. The secondary indexes are non key fields in table.
DD_DROP_INDEX - Deletes the index of the table
DD_CREATE_INDEX - Create primary and secondary index
DD_DROP_INDEX - Deletes the index of the table
DD_CREATE_INDEX - Create primary and secondary index
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