Binary Relational Operation 二元关联操作
Unary Relational Operation 一元关联操作
relational join operation 关连式结合运算
Relational calculus and Logical operation 关系运算与逻辑运算 ; 三
relational algebra operation 关系代数操作
This option indicates whether the federated server should consider pushing down any SQL operation for a relational source.
该选项表明联邦服务器是否应该考虑下推对一个关系数据源的任何 SQL 操作。
Conceptually, rows of relational data (tuples) flow through the operation nodes in the query plan from bottom to top.
从概念上来说，关系数据行(元组)按照自下向上的方式流过查询计划中的操作节点。
Similarly, an update operation can update the relational value too.
类似地，UPDATE操作也能更新关系值。
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