Introduction
Relational databases organize data into tables, which makes it easy to store, retrieve, and manipulate information. In this post, we’ll explore these fundamental building blocks and...
关系数据库通过表格组织数据,行代表记录,列定义属性。主键唯一标识记录,外键连接不同表。设计时需关注数据质量,避免空值。