pyRXP的元组树数据结构。

PyRXP's tuple tree data structure.

youdao

开源的 D2RQ 接口让您可以将关系数据当作一个三元组集合对待，因而该数据可以合并到这样的应用程序中。

The open source D2RQ interface lets you treat relational data as a collection of triples so that this data can be incorporated into such an application.

youdao

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。

Conceptually, rows of relational data (tuples) flow through the operation nodes in the query plan from bottom to top.

youdao