Databases

Databases

1. benefits

   • fast access faster than paper based systems
   • easy to edit
   • validation setting checks on the data as it is enterd
   • reports can printed
   • securaty passwords can be set

2. validation

   • validation is an automatic computure check to ensure that the data entered is sensible and reasonable .it does not check the accuracy of data

3. verification

   • verification means to check the data you have entered against the origional source of data

4. data base terminology

   • definition
     • a data base is a collection of data or infomation which is held together in an organised or logical way

5. data types

6. range check

7. key fields

8. data base terminology

Imágenes y archivos del mapa