在订单管理模块中,新建订单和修改订单都需要检查用户是否登录,用例“新建订单”、“修改订单”与用例“检查用户登录”之间是( )。
在用例图中,用例之间的关系主要有:包含关系、扩展关系、泛化关系。
在本题中,由于新建订单和修改订单都需要检查用户是否登录,这说明检查用户是否登录,是从新建订单和修改订单中提取出来的公共部分。提取出来的抽象用例与原来的用例之间是包含关系。
( )is the process of transforming information so it is unintelligible to anyone but the intended recipient.
As each application module is completed,it undergoes( )to ensure that it operates correctly and reliably.
( )algorithm specifies the way to arrange data in a particular order.
After analyzing the source code,( )generates machine instructions that will carry out the meaning of the program at a later time.
( )can help organizations to better understand the information contained within the data and will also help identify the data that is most important to the business and future business decisions.
浏览器开启无痕浏览模式后,( )依然会被保存下来。
下列协议中,不属于TCP/IP协议簇的是( )。
下列传输介质中,带宽最宽、抗干扰能力最强的是( )。
数控编程常需要用参数来描述需要加工的零件的图形。在平面坐标系内,确定一个点需要2个独立的参数,确定一个正方形需要( )个独立的参数。
某书的页码为1,2,3,...,共用数字900个(一个多位数页码包含多个数字),据此可以推断,该书最大的页码为( )。