8890420
Description
Mind Map by Catherine Foreman, updated more than 1 year ago
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Created by Catherine Foreman
over 7 years ago
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Validation and
Verification
- Validation
- A COMPUTER check to
ensure that the data
entered is sensible and
reasonable.
- Presence Check
- Requires that a
value must be
entered.
- For example, the details of an
order are being entered, the order
cannot be processed unless an
order number is entered and the
programme will return an error
message if the box is left empty.
- For example, the details of an
order are being entered, the order
cannot be processed unless an
order number is entered and the
programme will return an error
message if the box is left empty.
- Requires that a
value must be
entered.
- Format Check
- Requires that
data conforms to
a defined layout.
- For example, a national
insurance number must
contain 2 letters, 6 digits
and a letter. If the
operator tries to enter a
different combination, an
error message is returned.
- For example, a national
insurance number must
contain 2 letters, 6 digits
and a letter. If the
operator tries to enter a
different combination, an
error message is returned.
- Requires that
data conforms to
a defined layout.
- Range Check
- The data must
be a value that
falls between
two prescribed
values.
- The date of birth of a
pupil must fall between
1/9/83 and 31/8/95. Any
date outside of this will
be rejected.
- The date of birth of a
pupil must fall between
1/9/83 and 31/8/95. Any
date outside of this will
be rejected.
- The data must
be a value that
falls between
two prescribed
values.
- Length Check
- Data must
have a certain
number or
characters or
digits.
- For example, a phone
number must contain 11
digits.
- For example, a phone
number must contain 11
digits.
- Data must
have a certain
number or
characters or
digits.
- Data Type
- Data must be a
specific type such as
number or text.
- For example, data
entered for stock
number must be
numerical, if text is
entered, it will be
rejected.
- For example, data
entered for stock
number must be
numerical, if text is
entered, it will be
rejected.
- Data must be a
specific type such as
number or text.
- Fixed Value
- Data must conform to one
value in a predefined list.
- For example, for gender,
only M or F are acceptable,
entering anything else will
result in an error message.
- For example, for gender,
only M or F are acceptable,
entering anything else will
result in an error message.
- Data must conform to one
value in a predefined list.
- Check Digit
- A numerical calculation on a code
number and comparing it with
the final digit. If it is not the same
value, then an error message is
displayed.
- For example, a
barcode
- For example, a
barcode
- A numerical calculation on a code
number and comparing it with
the final digit. If it is not the same
value, then an error message is
displayed.
- A COMPUTER check to
ensure that the data
entered is sensible and
reasonable.
- Verification
- A human check to ensure
that data has been copied
correctly from one medium
to another.
- Proof Reading
- Being asked to check what
you have entered is correct
before being allowed to
move on.
- Being asked to check what
you have entered is correct
before being allowed to
move on.
- Double Entry
- Having to re-input
your account
number, email
address or
password.
- Having to re-input
your account
number, email
address or
password.
- A human check to ensure
that data has been copied
correctly from one medium
to another.
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