With the correlation it operates more like a user-defined relational operator. 由于这一层关系,它操作起来更像是一个用户定义的关系操作符。
Blanks can be used on either side of a relational operator, but blanks cannot be used to separate a two-character operator, such as ==. 原译法:空格可以用在一个关系运算符(RO)的两边,但不能用于分隔一个双字符的运算符如=。
A new relational operator Sj-reduce is introduced in this paper. Using the Sj-reduce can directly solve the cyclic query at a lower communication cost in distributed databases. 本文引进了一种新的关系操作Sj-reduce,它能以较少的通信开销,去直接求解分布式数据库中有回路的查询。
Edit the XML Relational Mapping operator, deleting all column definitions except those required by the target table. 编辑XMLRelationalMapping操作符,删除目标表不需要的所有列定义。
Complete the following steps to add an XML Relational Mapping operator, connecting it to the output of your source table. 完成以下步骤,添加一个XMLRelationalMapping操作符,将它连接到源表的输出端。