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Requires controls over both data input quality and the processing of the data
Reliability
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A ________ system produces information that is accurate, timely, reflects results of only authorized transactions, and includes outcomes of all activites engaged in by the organization during a given period of time
Reliable
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compares the ID code or account number in transaction data with similar data in the master file to verify that the account exists.
Can # exist; true or not
Validity check
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detrmines the correctness of the logical relationship between two data items.
Logical Relationship
ex: executive makes 15,000 a month can recieve a 1,000 bonus, this a _____. an empolyee making 1,500 receiving a 1,000 bonus is not ______
reasonable test
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Authorized ID numbers can contain a ________ that is computed from the other digits.
ex: system can assign two employees 9 digit numbers, but then calculate a tenth digit from the original nine and add it to append a ten digit ID
check digit, check digit verivication
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determines if the characters in a field are of the proper type.
field check
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detrmines if the data in a field have the appropriate arithmetic sign
sign check
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tests a numerical amount to ensure that it does not exceed a predetermind value
limit check
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is similar to a limit check except that it has both upper and lower limits
range check
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ensures that input data will fit into the assigned field
size check
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each input record determines if all required data items have been entered
ex: sales tranaction record should not be entered if the address is not there.
completness check
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a ______ tests if a batch of input data is in the proper numerical or alpahbetical sequence.
sequence check
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checks the accuracy of input data by using it to retrieve and display other related information.
close-loop verification
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controls needed to ensure that data is processed correctly
processing controls
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Encrypting information before sending it over the internet creates what is called a _________
Virtual Private Network
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