Database Overview
The concept of databases
name abbreviation database DataBase(DB) Database management system DataBase Management System(DBMS) SQL Structured Query Language(SQL) MySQL Start of 、 stop it
start-up :
net start mysql80stop it :
net stop mysql80(PS:mysql80 by Win Sign up to MySQL System service name in )
MySQL Connection of the client
Use WIn Of cmd Command line connection :
mysql [-h 127.0.0.1] [-p 3306] -u root -p 123(PS:-h Specify the address 、-p Designated port 、-u Specify user name 、-p Specified password )
Relational database (RDBMS)
Concept : Based on the relational model , A database consisting of multiple connected binary tables .
characteristic :
- Use tables to store data , use the same pattern , Easy to maintain ;
- Use SQL Statement operation , Unified standards , Easy to use ;
Data model
client ——> Database management system (DBMS)——> database
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