Database Software Flashcards
Validation
Checking that data is acceptable and sensible.
Verification
Checking that data entered has been inputted accurately.
Presence check
Ensures that some data has been entered into an area on the form.
Length check
Ensures that data entered is of the correct length e.g. At least 8 characters
Type check
Ensures that data is the correct type e.g. Numeric, text, date
Numeric
Data which is a number and can be used for calculations
Text
Data made up of letters or letters and numbers
Date
Data formatted as a date or time
Boolean
Data which can only have two values e.g. Yes/No, True/False, 0/1
Currency
Data representing values of money
Format check
Ensures data follows a particular format e.g. Three letters followed by three numbers - AAA000
Range check
Ensures data is within a given range e.g. Between 1 and 10, or between two dates
Check digit
A number added to the end of a barcode that is used to check whether the barcode has been scanned or entered correctly.