Validation

Validation

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Define: Validation
1) ensuring data is sensible, reasonable and within acceptable boundries
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name the 7 main validation techniques
1) Range check 2) Type check 3) Presence check 4) picture format check 5) Lookup 6) Length Check 7) Check digits
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Describe "range check"
1) A range check allows you to set suitable boundries - if data to be entered into the field is always below 100 then "<=100" can be entered
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Describe "type check"
1) if the data within the field is always a (whole number) then the data type "integer" can be set to avoid human errors
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Describe "Presence check"
1) a presence check ensures the field cannot be left blank e.g - "appointment date"
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Describe "Length check"
1) if the field "mobile number" always requires "11" characters to be entered so a length check can be set up to avoid "10/12" characters being entered
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Describe "Picture format check"
1) if for instance the field for "postocode" could follow a letter/number format of "LLNN NLL" this could ensure that a letter is not entered where a number should be
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Describe "Check digit"
1) this is to ensure that the range of numbers are entered correctly - e.g barcode
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Decribe the 2 common errors when it comes to (data entry)
1) Transcription errors - whenever data is manually entered there is a chanse an error will be made 2) transpotion errors - the changesin letters or number e.g data to be entered = "89" but "98" is entered
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Other cards in this set

Card 2

Front

name the 7 main validation techniques

Back

1) Range check 2) Type check 3) Presence check 4) picture format check 5) Lookup 6) Length Check 7) Check digits

Card 3

Front

Describe "range check"

Back

Preview of the front of card 3

Card 4

Front

Describe "type check"

Back

Preview of the front of card 4

Card 5

Front

Describe "Presence check"

Back

Preview of the front of card 5
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