Mapa mental
Databases
Mind map: Databases
Conteúdo do mapa
Databases
Flat-file
- Single table of data
- Limited use from one pool of data
- Data redundancy: data can be entered over and over again like customer details for every order
Relational Databases
- Advantages
- Data redundancy
- Data consistency
- Password access to allow access to certain areas for certian employees
- Two or more tables
- With links
- Primary keys
- Foreign keys
- With links
- Advantages
Verification and Validation
- Proof reading
- Double entry
Informações
- Descrição
- AS Levels A2 ICT - Use and Impact of ICT (6. Database Systems) Mapa Mental sobre Databases, criado por Henry Cookson em 15-12-2014.
- Criado por
- Henry Cookson
- Visualizações
- 43
- Tags
- Avaliação