The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.
SDO_DAS_ChangeSummary::NONE=0
      (integer)
   SDO_DAS_ChangeSummary::MODIFICATION=1
     (integer)
   SDO_DAS_ChangeSummary::ADDITION=2
     (integer)
   SDO_DAS_ChangeSummary::DELETION=3
     (integer)