The following schema definition corresponds to the description tools of: ISO/IEC 15938-1 + ISO/IEC 15938-1 COR/1 /1 + ISO/IEC 15938-1 AMD/1 (Systems) ISO/IEC 15938-2 (DDL) ISO/IEC 15938-3 + ISO/IEC 15938-3 COR/1 + ISO/IEC 15938-3 AMD/1 (Visual) ISO/IEC 15938-4 + ISO/IEC 15938-4 AMD/1 (Audio) ISO/IEC 15938-5 + ISO/IEC 15938-5 COR/1 + ISO/IEC 15938-5 AMD/1 + ISO/IEC 15938-5 AMD/2 (MDS) This document contains tools defined as MPEG-7 specific extention of XML Schema in ISO/IEC 15938-2 The following section contains tools defined in: ISO/IEC 15938-1 + ISO/IEC 15938-1 AMD/1 (Systems) The following section contains tools defined in ISO/IEC 15938-2 The following section contains visual tools defined in: ISO/IEC 15938-3 + ISO/IEC 15938-3 AMD/1 (Visual) This section contains tools defined in: ISO/IEC 15938-4 + ISO/IEC 15938-4 AMD/1 (Audio) This section contains MDS tools defined in ISO/IEC 15938-5