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AIN 2601 > 1. Data And Computerized Information Process > Flashcards

1. Data And Computerized Information Process Flashcards

1
Q

What does the information system process figure look like?

A

Activities -> input data -> processing -> output data -> making decisions

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2
Q

What is the mnemonic for important characteristics of information?

A

Are all computers easy for real robots, simply starter test vehicles.

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3
Q

What are the important characteristics of information?

A
  1. Accessible
  2. Accurate
  3. Complete
  4. Economical
  5. Flexible
  6. Relevant
  7. Reliable
  8. Secure
  9. Simple
  10. Timely
  11. Verfiable
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4
Q

What is raw data?

A

Data entered into CIS but not yet processed

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5
Q

Is raw data valuable?

A

Not until processed

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6
Q

What characters tics should raw data have?

A
  1. Accurate
  2. Complete
  3. Reliable
  4. Verifiable
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7
Q

What is information?

A

Data that has been processed

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8
Q

What is a source document?

A

The first document record of an activity

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9
Q

What are the methods of data input?

A
  1. Batch input

2. Online input

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10
Q

Where is data stored once entered into CIS?

A

The transaction files

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11
Q

What is batch input?

A

Where similar source documents are grouped together and entered into the CIS periodically

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12
Q

Why would batch input be used?

A

When there are a huge number of similar source documents and the information is only required at the same frequency as data capturing

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13
Q

What is an advantage of batch input?

A

Economies of scale. Data is captured at one point instead of dispersed

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14
Q

What is a disadvantage of batch input?

A

The CSI is not always up to date with the latest data

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15
Q

What is online input?

A

The immediate capturing of data at the point of activity

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16
Q

What is an example of online input?

A

Where supermarkets use bar codes to scan in transactions at point of sale

17
Q

What is the maintain advantage of online input?

A

The CIS is always up to date with the latest data

18
Q

What is a disadvantage of online input?

A

It is costly to implement hardware. E.g. Scanners

19
Q

What are the different methods of processing data?

A
  1. Classifying data
  2. Performing calculations
  3. Sorting
  4. Summarizing
  5. Transforming data
20
Q

What is classifying data?

A

Sorting it according to categories based on certain characteristics

21
Q

What is sorting data?

A

Sorting it into an order. E.g. Alphabetically etc.

22
Q

What is summarizing data?

A

Condensing data via specific criteria

23
Q

What is transforming data?

A

Turning into graphs etc.

24
Q

What are the different processing types?

A
  1. Batch processing

2. Real-time processing

25
Q

What is batch processing?

A

Transaction files are updated to master files periodically

26
Q

What is the disadvantage of batch processing?

A

Master files are only up to date periodically

27
Q

What is real-time processing?

A

Where processing of data happens immediately

28
Q

What is the advantage of real-time processing?

A

Master files are always up to date

29
Q

What are the types of output?

A
  1. Batch output

2. Interactive output

30
Q

What is batch output?

A

All requests are batched and extracted periodically

31
Q

What is a disadvantage of batch output?

A

User need to wait for periodic output file

32
Q

What are some advantages of batch output?

A
  1. Reports will always be consistent

2. Extraction can be scheduled during downtime like on weekends thus optimizing computer resources.

33
Q

What is interactive output?

A

Users are directly connected to the CIS and can extract information immediately

34
Q

What is a drawback of interactive output?

A

Computer resources are not used optimally

35
Q

What is a flat file environment?

A

Users have their own files and there is no sharing

AIN 2601 (4 decks)

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