Data Validation

Data Validation

1. Field length check

   • Only allows a specific number of characters to be entered.
   • How long your data is for example with a phone number you can only enter 11 characters.

2. Type check

   • it only allows a certain type of data to be entered
   • text, number, currency, date/time,

3. Range check

   • 1 between 100
   • The number entered must be within a certain range.

4. List check

   • it only specific data can be entered
   • male,female, age

5. Presence check

   • you cant leave the box empty

6. Format check

   • data must be entered in a specific way
   • if your entering a code for something online
     • 0000-0000-0000-0000