1-1 Orientation
We save and open data in a FILE.
But, files have limitations in terms of performance, security, convenience.
DATABASE is a specialized software designed to overcome the limitations that files have.
Examples of database products: MySQL, Oracle, SQL Server, PostgreSQL, MongoDB ...
1-2 The Essence of Database
CORE: how to input and output data from the database
Input: CUD (Create, Update, Delete)
Output: R (Read)
1-3 File vs Database
File -> Spreadsheet -> Database
1-4 End
Database Model
- Relational DBMS: 관계형 데이터베이스 관리 시스템
Oracle (유료, 대기업, 공기업에서 주로 사용),
MySQL (무료, 오픈소스) - Others
MongoDB
...
