Which tool is better for Mysql database sub-database sub-table? I have compiled five tools for comments.

1 user class library: used to save the relevant information of users. For example: db_user, db_system, db_company, etc.

Business class library: used to store the information of major businesses. For example, if the main business is jokes, use this library to save the joke business. For example: db_joke, db_temp_joke, etc.

3 memory class library: Mysql memory engine is mainly used. The data at the front desk is searched from memory, which is very fast. For example: heap

4 picture class library: it mainly stores the indexes and associations of pictures. For example: db_img_index, db _ img _ res

Log class library: records log information such as clicking, refreshing and logging in. For example: db _ log _ click, db _ log _ fresh, db _ log _ login.

6 statistical class library: business statistics, such as click volume, refresh volume and so on. For example, db_stat