database:
MySQL free, performance is very good Cons: clustering, disaster a little bit weak
Oracle charges, large-scale applications, financial level, performance is very good, clustering, disaster recovery is very strong Cons: expensive
mySQL installation tutorial --nodeJsz intelligence agency 17 video lessons
Command line operations mySQL:
Enter the mysql directory : cd C: \ Program Files \ MySQL \ MySQL Server 5.7 \ bin
Login: mysql.exe -uroot -p password
Show catalog: show databases;
Use: use mysql;
Tables show: show tables;
Exit: exit
The basic database concepts :
Dual units:
1, Library: Folder - used to manage table itself can not save data
2, the table: the file - to the stored data
3, Fields - Column
Database management tools: navicat
Download and install: Navicat for MySQL
Packet address: https: //pan.baidu.com/s/1vKkuxepjMtxH-EQfqQmfig
1, is connected - mySQL
2, the new database - right - New Database
2, the new table - a database - table - Right - New Table
Name, type, length, decimal, null primary key (a unique identifier, a query higher performance)
