Enterprise Edition Home | Express Edition Home | Previous Page | Next Page   SQL Statements > CREATE INDEX >

Fragmentation of System Indexes

System indexes (such as those that implement referential constraints and unique constraints) utilize user-defined indexes if they exist. If no user-defined indexes can be utilized, system indexes remain nonfragmented, and are moved to the dbspace where the database was created.

To fragment a system index, create the fragmented index on the constraint columns, and then add the constraint using the ALTER TABLE statement.

Enterprise Edition Home | Express Edition Home | [ Top of Page | Previous Page | Next Page | Contents | Index ]