Writes all page changes back to  the  database  since  the  last
 COMMIT or ROLLBACK command was entered.

Additional information available:

FormatMoreExamples

 COMMIT ──>

 The results of DEPOSIT and MOVE commands  are  kept  in  virtual
 memory  until  you issue a COMMIT or ROLLBACK command.  When you
 issue a COMMIT command, all pages that  you  changed  since  the
 last  COMMIT  or ROLLBACK command are written to the database in
 their new form.

 Changes are not permanent until you issue a COMMIT command.   If
 you  issue  an  EXIT command while altered but uncommitted pages
 exist, an error results.  You  cannot  issue  the  EXIT  command
 until you first issue either a COMMIT or a ROLLBACK command.

 Example 1

 The following example commits all page changes entered since the
 last COMMIT or ROLLBACK command.

 RdbALTER> COMMIT