(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.
![](https://img-blog.csdnimg.cn/img_convert/f02d89343fba48b796a3db08c991051b.png)
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.
![](https://img-blog.csdnimg.cn/img_convert/e1326e3f5f7e49eb8ef5a0f6e534e1d2.png)
Since the SQL language operation notes are too long, I put them in the next part