CDO>  DEFINE CONTEXT SALES
  cont>   BASE_PARTITION IS FIRST_QUARTER
  cont>   DEFAULT_ATTACHMENT IS LATEST_CHECKIN.

      In this example, the DEFINE CONTEXT command creates the SALES
      context. The BASE_PARTITION clause sets the base partition
      property to the previously defined FIRST_QUARTER partition. The
      keyword LATEST_CHECKIN in the DEFAULT_ATTACHMENT clause sets
      the default attachment property for the context to the version
      most recently checked in.

      See the DEFINE COLLECTION command for more information on
      setting the top collection property for a context.