(This article is mainly to record the process of my own learning, and the pictures are invaded and deleted)
MySQL concept
Database: A warehouse that stores data, and data is stored in an organized manner.
Database Management System: Large-scale software that manipulates and manages databases.
SQL: A programming language for operating relational databases, which defines a set of unified standards for operating related databases.
MySQL database
Relational database: A database composed of multiple interconnected two-dimensional tables based on the relational model.
Features:
Use tables to store data, and the format is unified, which is easy to maintain.
Use SQL language operation, unified standard, easy to use.
Since the SQL language operation notes are too long, I put them in the next part