理学 数据库系统 释 relational algebra 关系代数 一种抽象的关系数据语言，它通过对关系的运算来表达查询。
relational algebra 关系代数
数据库 数据库理论 释文 relational algebra 关系代数
- Berlekamp-Preparata code
- Berlekamp-Zassenhaus algorithm
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