程序模拟操作系统课程中的进程间通信，方便起见，各个进程只有编号信息。所用数据结构为大小为10的队列。运行情况为：用户输入进程总数以及各个进程的编号，此后程序模拟进程对队列提出请求，若队列不空，则插入，队列满则不予插入。程序利用rnd这个随机变量是奇数还是偶数决定是入队还是出队。-Procedures for operating systems courses in the simulation process communication, convenience, only the number

这本书目的是给读者提供一个关系型数据库模型领域的背景。这是一本易读的和有实践练习的书。-Relational databases provide a powerful means by which to store and manipulate vast volumes of data. The design of such systems is based on the mathematics of relational theory, which was advanced in it