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Assignment 6 - Batch Processing 1Week 1 Theory 1
Business Information Systems BatchProcessing
!!
Assignment 6 - Batch Processing 2Week 1 Theory 1
Business Information Systems BatchProcessing
!!
Data Capture Techniques
• Data capture or collection can take many forms
• A questionnaire collects data from questions asked
• The questions are usually constructed to give a reasoned answer and not a simple “yes” or “no”.
• These qualitative answers provide more data for the analyst.
• A tally sheet counts the occurrence of particular items, such as a traffic survey of customer count.
• Polling can provide data on the choice individuals make
Assignment 6 - Batch Processing 3Week 1 Theory 1
Business Information Systems BatchProcessing
!!
Questionnaires
• You have all created questionnaires before and should have realised that there is an art to deciding upon the questions.
• To create a questionnaire you should firstly start with the answers!
• What are the points you want to know about.
• What format do you want the answers to be in.
• Is there a specific “agenda” that the questionnaire will support or refute.
• Who is the target audience for the questionnaire.
• The analysis of the survey will best be served if the answers are in a particular format.
Assignment 6 - Batch Processing 4Week 1 Theory 1
Business Information Systems BatchProcessing
!!
Questionnaires
• Questions should be of the “open”type.
• Yes / No answers are produced by “closed” questions.
“Do you like the picture?”
“Are all the pictures the same?”
“Have all the pictures an equal
amount of bright and dark colours
spread across the whole of the
canvas?”
“How would you describe
the picture?”
“Use 3 words to describe the picture?”
“If you could take one picture
home, why would you choose
your selection?”
Which are Open and Closed questions
Assignment 6 - Batch Processing 5Week 1 Theory 1
Business Information Systems BatchProcessing
!!
Data Capture Sheets
• Tally sheets are a very simple method of collecting data.
• A simple traffic count or stock check sheet is an example of a Tally sheet.
• They provide a quantative result to the data collected. A questionnaire could provide a qualitative result.
• They simply give a data return for the chosen question for a specific time period.
• A repeat trawl of data in the same location but at a different time would give a different set of data results!
Assignment 6 - Batch Processing 6Week 1 Theory 1
Business Information Systems BatchProcessing
!!
Polling
• Polling is the gathering of data in response to set questions.
• At election time you will see Polls from MORI and other organisations on how the population view the different Political Parties
• A Poll can be very specific and targeted at a particular demographic group.
• A Poll may require a ‘yes / no’ answer to a single question or a choice from a given set of possible responses.
• It involves an interaction with the target audience, unlike the tally which can be remote.
• The results are the same as the Tally sheet as the Poll produces a quantative result from the data collected.
Assignment 6 - Batch Processing 7Week 1 Theory 1
Business Information Systems BatchProcessing
!!
Data Capture Sheets
• Is there a specific layout to a data capture sheet. The answer is NO.
• Each method chosen to “capture”, “trawl” or “mine”for data is different.
• The layout or style of the data capture sheet is therefore different. There are points to consider :-
• Consider the text size for information that your audience will read.
• The use of colour can add interest to a tedious process.
• Make sure there is sufficient space for written answers, either yours or the audience response.
• Make the design easy for the data to be transferred to computers for analysis.
• Always proof read the data capture sheet for possible ambiguities as well as spelling and tying errors.
Assignment 6 - Batch Processing 8Week 1 Theory 1
Business Information Systems BatchProcessing
!!
Batch Processing
• Is the processing of large quantities of data at a given moment in time.
• The major Utility Companies use batch processing in order to provide the billing for gas, electricity and water.
• Data is collected, entered into the system and batch processed to produce the bills. The automated system will then print the envelopes, fold the bill, place the bill in the envelope, frank the envelope and place it in a bin ready for collection by the Post Office.
• Batch processing involves a number of stages designed to prevent errors.
Assignment 6 - Batch Processing 9Week 1 Theory 1
Business Information Systems BatchProcessing
!!
Batch Processing- the advantage
• Batch processing allows for huge data files to be processed in one go.
• It has a relatively low error rate.
• It is processed at night when the demands upon computing time are low.
• Automation systems can take the processed work and progress it to the finish.
• Mainframe computers are used to perform the processing jobs which ensures they are fully utilised. Mainframe computers which are not used 24-7 are expensive room heaters!
Assignment 6 - Batch Processing 10Week 1 Theory 1
Business Information Systems BatchProcessing
!!
Batch Processing - Stages of processing data
• Before the data can be processed it will have gone through a number of stage all of which are prone to error.
• The data may not be legible and would not be processed correctly.
• Typing in the data could lead to mistakes. These are called transcription errors.
• Data sheets could get damaged, mislaid etc.
• Bored keyboard operators may enter the same data twice or miss data.
• Equipment faults may corrupt part of the data, giving a false figure.
