Reindex

Reindex rebuilds an index using the data stored in the index's table, replacing the old copy of the index. Reindex is used when the definition of a collation sequence has changed.

Reindex Database
Just simply right-click the database and select Maintain Database -> Reindex Database....

Reindex Table
Just simply right-click the table and select Maintain Tables -> Reindex Tables....


Related topics:
Analyze
Vacuum