1.前言 自动寻找记入存贮器(简称自存),是在随机存贮器的基础上增加了标志位,专为记载有记入的各存贮器地址,等控制读出时,按着标志位的指示,依次只读各有记入的存贮器地址的内容,没有记入的各地址就自动绕过。它很符合数据库系统中剔除重复,排序和连接等诸操作的规律性。 1. Preface Automatically find the memory (referred to as self-storage), is based on the additional memory of the flag, designed to record the memory of the memory address, such as control read, press The indication of the flag, followed by reading only the contents of each memory address, not all addresses are automatically bypassed. It is consistent with the regularity of deduplicating, sorting and concatenation operations in database systems.