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- 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。
- 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。
- original relational algebra operators 原始算子
- derived relational algebra operators 关系代数的派生算子
- 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。
- The harmful effect on the motion edge by global smoothness constraint in Horn algorithm is weakened by algebraic operation. 通过代数运算减轻了horn算法中全局约束对运动边界的影响。
- 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。
- Ben--Tal generalized algebraic operation Ben-Tal广义代数运算
- The broad question of which equations are solvable by algebraic operations was definitely and comprehensively answered by Galois. 哪些方程可用代数运算求解,这个重要问题由Galois明确而透彻地回答了。
- generalized Ben-Tal algebraic operation Ben-Tal广义代数运算
- relational algebraic interpreter 关系代数解释程序
- algebra operation language on statistical database 统计数据库上的代数操作语言
- 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
- Jiuzhang deals with mathematical model composed of elementary algebra operations and performing multi-directional computation on the mathematical model. “九章”能够加载以初等代数公式描述的数学模型,并演算求解模型各个计算方向的应用。
- Relational Algebra and Relational Calculus 关系代数与关系演算
- He's mending nicely after his operation. 手术后他正在顺利康复。
- He is in charge of the operation of the steel mill. 他负责这家钢厂的经营工作。
- The bank plan a rescue operation for the company. 银行计划对这个公司采取挽救措施。