Zusammenfassung der Ressource
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
- Verification and Validation
- Proof reading
- Double entry