Topic 4 Flashcards
1
Q
What 4 stages can data errors occur
A
Transcription
Input
Processing
Transmission
2
Q
How can you avoid transcription errors?
A
- staff should be trained to be accurate
- programmes must contain appropriate validation check
- avoid the use of keyboarding as a data input method
3
Q
What errors can inaccurate data cause?
A
- incorrect decisions being made=loss of money
- goods being Sent to the wrong address
- wasting time Sorting mistakes
- loss of goodwill and trust
4
Q
What two errors can occur during data entry?
A
Transcription
Transposition
5
Q
Name some transcription errors?
A
Problems with speech
Poor handwriting
Misinterpretation
Typing mistakes
6
Q
Name some transposition errors?
A
Fro instead of for
Account number 10065 instead of 10056
7
Q
What’s the difference between a validation check and a verification check?
A
Validation is a check performed by a computer program during entry.
Verification is checks that the data being typed in matches exactly the data on the document used to supply the information.
8
Q
Name 4 validation checks
A
- Data type checks
- Presence checks- where fields have to be filled, e.g: card number
- Length checks
- cross field check- valid codes for departments
9
Q
What are some examples of verification checks?
A
- Double entry of data: when creating a password, put in twice
- proof checking
- Sending back printouts
- avoiding human error
