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TA3 ICT revision - Coggle Diagram
TA3 ICT revision
Validation tools
Data type check
Data entered is the correct type
Format check
Data entered is in the correct format
Input mask
Data being entered in the right way
Length check
Data is the minimum length
Limited choice
Is the data entered available
Lookup
Is the data entered the correct value
Data types
Alphanumeric
Combination of number and letters
Boolean
Only has two responses
Date/Time
Stores a range of dates and times
Text
Any possible characters
Numeric
Any numbers
Real
Integer
Percentages
Decimal
Currency
Information and data
Data
Facts and figures with no meaning or link
Information
Data is given meaning
Relationship formulae
Information = Data + Structure + Context
Information needs to be in a specific format
Validation and verification
Validation
Checks data is sensible
Checks data is reasonable
Only checks if it is wrong not right
Verification
Checks data matches the original
Doesnt check data is correct only that it matches the original