Advantages and Disadvantages of DBMSs 数据库的优点和缺点
However, for many years, many popular DBMSs have been hybrid object-relational.
不过，许多年来，很多流行的DBMS都是对象和关系的混合体。
Although most DBMSs are not network oriented, they share these common features.
尽管大多数DBMSs不是面向网络的，它们具有以下相同的特性。
Furthermore, major DBMSs already provide compact and efficient flat-file or packed-record-style dumps.
而且，一些主要DBMS已经提供了简洁而有效的文本文件或压缩记录样式的转储。
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