relational algebra

英 [rɪˈleɪʃənl ˈældʒɪbrə]

美 [rɪˈleɪʃənl ˈældʒɪbrə]

网络  关系代数; 关系型代数; 式代數; 关联式代数; 关联代数

计算机

双语例句

• Discussion of Category Model of Relational Algebra in Relational Database
  关系数据库中关系代数范畴模型的讨论
• Its fuzzy knowledge representation, fuzzy relational algebra and the inaccurate reasoning implementation policies are described in detail.
  详细介绍了其模糊知识表示、模糊关系代数及不精确推理的实现策略。
• The paper presents relational query authentication model based on Hierarchical Hash Chain, and designs some extensible authentication methods to relationship-oriented database. Moreover, this paper achieves authentication in relational algebra, which includes select, projection, join, aggregate functions and other query operations.
  论文以层次哈希链为基础构建了关系查询认证模型，设计了一套可扩展的面向关系数据库的查询结果认证方法，实现了关系代数中选择、投影、连接和聚集函数的查询认证。
• Research and Realize the Relational Fuzzy Comprehension Evaluation Based on Relational Algebra
  基于关系代数的模糊综合评判算法的研究和实现
• 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
• Quotient set is one of the most important conception of relational algebra. It is widely used in computer science and technology information science and information engineering.
  商集是关系代数中的一个重要概念，在计算机科学和技术、信息科学和信息工程中都有广泛的应用。
• Another benefit of the move to DB29 is the hybrid storage engine and a query optimizer that "understands" XML ( mapping to relational algebra for queries involving XML).
  迁移到DB29的另一个好处是，混合型存储引擎和查询优化器“理解”XML，可以把涉及XML的查询映射为关系语法。
• The derived relational algebra operators are widely used in the relational database query languages.
  关系代数的派生算子在关系数据库查询语言中得到了广泛应用。
• Temporal Relational Algebra in Real time Database Systems
  实时数据库系统的时态关系代数
• Based on a concept of main memory database system ( MMDBS) and the SB tree indexing structure, this paper proposed a SB tree indexing structure which was more suitable for relational algebra operations in an MMDBS.
  基于一种广泛接受的内存数据库系统基本概念及内存数据库中的SB树索引结构，提出了更方便关系代数操作的SB树。