Course Link: Shang Li Yuting MySQL Silicon Valley
1. Why use a database to store data
Traditional data storage defect
- Array
- List
- Structure
- ……
Data stored in memory, the program runs end data loss, power loss of data.
- file
Data stored in the hard disk, non-volatile, but the data difficult to manage
Advantage database to store data
- Non-volatile data
- A complete management system to facilitate management
2. The database concepts
DB: Database, database, standardized holds a series of useful data;DBMS: Database Management System, database management systems, DBMS database by creating and operating a container;
Common DBMS: MySQL, Oracle (high fees), DB2 (IBM), SqlServer (MicroSoft) ......
The system architecture, DBMS divided into two types:
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Based on a shared file system DBMS: Access
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Based on a client - server's DBMS: MySQL, Oracle, SqlServer
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SQL: Structure Q uery Language, Structured Query Language, is designed to (almost all DBMS support is not specific language) database language to communicate;
3. Features database to store data
