relational algebra中文什么意思

发音:   用"relational algebra"造句
相关代数, 关系代数
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  1. In relational databases , an operator in relational algebra
    在关系数据库中,关系代数用的一种运算符。
  2. It is implied by the associative and commutative transformations permitted in relational algebra
    它由关系代数中允许的关联转换和交换转换表示。
  3. Leap is an rdbms ( relational database management system ) implementing the relational algebra - a core part of relational database theory
    Leap是一个rdbms ,它实现了关系代数,关系数据库理论的一个核心部分。
  4. A clause is formalized as a relational algebra expression and evaluated by employment of relational algebra operations . 3 . the proof theory based on xml is presented
    提出了利用关系代数运算实现xml查询子句求值的方法,并证明了该方法的正确性。
  5. This course is designed to introduce graduate students to the foundations of database systems , focusing on basics such as the relational algebra and data model , query optimization , query processing , and transactions
    课程描述本课程设计的目的是给研究生介绍数据库的基础知识,关注于基础,如关系代数和数据模型,查询优化、查询处理和事务。

百科释义

In computer science, relational algebra is an offshoot of first-order logic and of algebra of sets concerned with operations over finitary relations, usually made more convenient to work with by identifying the components of a tuple by a name (called attribute) rather than by a numeric column index, which is what is called a relation in database terminology.
详细百科解释

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