In view of the preliminary study and small scales application , the flat file system is adapted to build a spatial metadata database . we design the interfaces of a metadata engine . according to the characteristics of the user ' s request for metadata , we give a solution on how to create index on xml document collection and to search those metadata records 從預研和小型系統(tǒng)應用的目的出發(fā),系統(tǒng)采用平面文件系統(tǒng)來建立空間元數(shù)據(jù)庫,論文給出了空間元數(shù)據(jù)庫管理引擎的接口設計,并根據(jù)對元數(shù)據(jù)查詢特點的分析,詳細闡述了對xml文檔型空間元數(shù)據(jù)庫建立索引和執(zhí)行查詢的方式和策略。