vxg 中文意思是什麼
vxg
解釋
固封極柱-
Xrdbm improves xml - dbms at following aspects : the consistency maintaining method during transforming semi - strctured data model into relation model, the maintenance of xml document and the problem of different subelements with the same name, etc. based on xrdbm, the author proposes an algorithm of xml publishing to deal with the input sql statements and generate valid xml document for the certain dtd automatically, named valid xml generating from sql ( vxg - sql )
Xrdbm對xml - dbms進行了如下改進和完善，包括dtd生成關系模式中常見的子元素重名、 xml文檔在關系數據庫中的維護、關系模式和半結構化模型之間映射的一致性維護方法等。在xrdbm基礎之上，作者設計並實現了根據sql語句自動生成符合dtd 、滿足一致性約束的xml文檔的演算法vxg - sql 。
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