INFO 1 - Design of Solutions

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  • Created by: CozzaB
  • Created on: 16-04-14 16:52
What do you have to do first when designing a solution?
Select design tools and techniques, and apply them to identified problems.
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When designing a solution, what should the design of the data entry do?
Make sure the entered data is correct and efficiently entered.
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What should you think about using instead of the keyboard and mouse when inputting data?
Data capture devices, like bar code readers, OCR's and voice recognition. They are often quicker at entering the data manually and could have built in error checking. They could also reduce RSI in operators when entering large quantities of data.
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What is validation?
A method of checking data to reduce the number of errors in the data entered.
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What does validation involve?
It test the data against the validation rule and gives the user an error message if the data fails the test.
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What is a presence check?
The simplest form of validation. Makes sure some data has been entered into a field.
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What is a range check?
A validation rule, checks that the data is within a selected range of letters of numbers.
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What is a format check?
A validation rule, checks data follows the correct pattern and is in the correct format.
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What is a length check?
A validation rule, check that the correct number of characters has been entered and that it is not too long or too short.
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What is a look up (or list check)?
A validation rule, makes sure that the data is on a list of acceptable values.
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What is a cross field check?
A validation rule, makes sure that the two fields are always entered correctly each time entered into a record.
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What is a digit check?
A validation rule, makes sure long numbers are entered correctly. The last one or two digits in a code are used to check the other digits are correct.
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What is verification?
Checking data is accurate against an original source.
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Why is verification performed?
To ensure that the data entered exactly matches the original source.
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What is double entry?
Entering the data twice and comparing the two copies. this effectively doubles the workload, and as most people are paid by the hour, it cost more too.
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What is proofreading data?
This method involves someone checking the data entered against the original document. This also is time consuming and costly.
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What can be used for data capture?
Forms.
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What are computer based forms?
Can have built in validation, and can be quicker than writing out data and entering it manually.
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What are paper based forms?
Can be filled in anywhere and entered into the computer at any time. Errors can occur if the data hasn't been written clearly or written wrong.
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What do you need to think about when designing a computer based data entry form?
Make it obvious where the data needs to be entered, How big the box is to give the user an idea of how much to write, Use features so there are limited choices, Build in validation and verification, the order of questions.
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Other cards in this set

Card 2

Front

When designing a solution, what should the design of the data entry do?

Back

Make sure the entered data is correct and efficiently entered.

Card 3

Front

What should you think about using instead of the keyboard and mouse when inputting data?

Back

Preview of the front of card 3

Card 4

Front

What is validation?

Back

Preview of the front of card 4

Card 5

Front

What does validation involve?

Back

Preview of the front of card 5
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