Home  Back Topics CD Orders  INDEX 
Data Encoding
Data may be encoded when it is stored. A number of different codes are defined for the data.

For example a gender field may be stored as codes (eg 'M' for Male, 'F' for Female).

This...
  • makes data entry easier (less to type)
  • saves storage space
  • makes validation easier

 

 

 Validation rules can be set to check if gender data entered into a database is either 'M' or 'F'.
Data may also be encoded for security reasons. (encryption)
Exercise : Data Encoding
Codes are often used for data when it is entered. This makes data entry , saves and allows to be easily set.

 
(Green indicates success)