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- nest relational algebra 嵌套关系代数
- 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。
- In relational algebra, the problems I discussed in this article are called relational division. 在关系代数中,我在本文中讨论的问题称为关系划分。
- From the perspective of relational algebra,decomposes any query to the sub-query on data partitioned horizontally and the post-query on merged intermediate results. 从关系代数的角度,将任意查询分解成对水平数据分区的子查询和汇总中间结果的后处理查询。
- Relational Algebra and Relational Calculus 关系代数与关系演算
- Temporal Extension of Relational Algebra Operators 关系代数操作符的时态扩展
- This paper introduces the concept of generalized fuzzy relation and extends relational algebra operators such as union, intersection, difference, Cartesian product, selection, projection etc. 文中引入了广义模糊关系的概念,讨论了广义模糊关系代数的操作:广义模糊并、广义模糊交、广义模糊差、广义模糊笛卡尔积、广义模糊投影和广义模糊选择等。
- ER() also gives a set of integrity rules.ER() expends relation model and relation algebra and uses object oriented and relation model to present multidimensional data. ER()给出了一组完整性规则.;扩充了关系模型和关系代数;使得能用关系对象模型表示多维数据
- original relational algebra operators 原始算子
- The bird is building a nest of straw and twigs. 这只鸟在用稻草和小树枝筑巢。
- derived relational algebra operators 关系代数的派生算子
- It proved that everything was a mare's nest. 结果证明一切都是场骗局。
- Logical operators describe the relational algebraic operation used to process a statement. 逻辑运算符描述了用于处理语句的关系代数操作。
- The blackbird's nest contained four eggs. 黑鹂巢里有四个蛋。
- The swallow has made a nest under our eaves. 燕子在我们的屋檐下垒了一个窝。
- A bird lays eggs in the nest it has built. 鸟将蛋下在自己所筑的巢里。
- The boy can't figure out the algebra problems. 这个男孩做不出这道代数题。
- He went into illegal business to feather his nest. 他做非法生意以达到营私之目的。
- We've learned algebra in middle school. 我在中学就学过代数学。
- Every bird likes its own nest the best. [谚]金窝银窝,不如自己的草窝。