您可能记得，检索和保持acl位图是考虑到初始的维护和数据库可移植性。
You may recall that retrieving and persisting ACL bitmaps was an initial maintenance and database portability concern.
这正是使用PHP和到数据库的OD BC连接来取得可移植性的优雅之处。
This is the really elegant aspect of using PHP and an ODBC connection to the database to achieve portability.
我在前面已提到J2EE通过促进数据库独立性来提高应用程序的可移植性。
I mentioned earlier that J2EE promotes database independence to improve the portability of applications.
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