操作可以是一个关系运算符，或者系统或用户定义的函数，也可以是一个sql操作符，例如GROUP BY、ORDER BY等。
An operation can be a relational operator, a system - or user-defined function, or an SQL operator, such as GROUP BY, ORDER BY, and so on.
文中描述了全局数据模型运算的定义、全局数据模型语言中模型运算操作的实现方法等。
We particularly describe the definition of model operation of global data model, the implementation method of model operation in the global data model language.
介绍采用引用计数、操作标志等方法实现矩阵复制、转置、乘常数等部分矩阵运算。
Then the methods of the adoption to quote from to count, operating the marking etc are introduced.
应用推荐