relational calculus
英 [rɪˈleɪʃənl ˈkælkjələs]
美 [rɪˈleɪʃənl ˈkælkjələs]
网络 关系演算; 关系运算; 关系型积分; 关联式计算; 关联逻辑
双语例句
- This paper introduces a method to correctly design the query expression of Relational Calculus while analyzing its functional mechanism and presents the close relationship with SQL language by taking examples.
在分析关系演算运行机制的同时，介绍了一种易于正确理解和设计关系演算表达式的方法，并通过实例揭示了它与SQL语言之间的密切联系。 - Based on this model, this paper constructs two different kinds of fuzzy database query languages: the fuzzy relational algebra and fuzzy relational calculus.
在此基础上，构造了两类不同的模糊数据库查询语言：模糊关系代数和模糊关系演算。 - A Relational Chart for the Concepts of Differential Calculus of Functions of Several Variables
多元函数微分学诸概念关系图 - A Fuzzy Relational Algebra and Fuzzy Relational Calculus
一种模糊关系代数与模糊关系演算 - Our approach is based on an extended relational calculus, and reduces the consistency problem to a satisfiability problem of relational formulae.
该方法以扩展的关系逻辑为语义基础，把一致性问题归结为关系逻辑公式的可满足性问题。 - Corresponding relation of the relational algebra calculus and SQL query
关系代数运算与SQL查询的对应关系 - This paper establishes a temporal relational algebra and a tern-poral tuple calculus, and proves their equivalence.
建立了一个时态关系代数和时态元组演算并证明了他们间的等价性。 - Analysis and Research of Functional Mechanism of Relational Calculus
关系演算运行机制的分析与研究 - For the relational algebra to the relational calculus of transformation rules, this change mainly to solve the dual operation, we found more computing re-defined with a very complex transformation rules, What can multiple operations from a single weight or double the computing multi-step to achieved.
针对关系代数到关系演算的转换规则，本文主要解决两重运算的转换，我们发现更多重的运算转换规则定义起来十分复杂，况且多重的运算完全可以由单重的或两重的运算多步来实现。