1. Data and Computerised Information System Process

Question 1

What is the basic flow diagram associated with data processing?

Answer 1

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

Question 2

When are better decisions made?

Answer 2

When there is easy access to information

Question 3

What is the Mneumonic for the characteristic of information?

Answer 3

Are all computers easy for real robots simply starter test vehicles?

Question 4

What are the characteristics that information should have?

Answer 4

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

Question 5

What is raw data?

Answer 5

Data in the form of hard copy or input in the CSI, but h not yet been processed

Question 6

Is raw data valuable?

Answer 6

Not until it has been processed

Question 7

What are the characteristics that raw data must be?

Answer 7

1. Accurate
2. Complete
3. Reliable
4. Verifiable

Question 8

What is the quality of information linked to?

Answer 8

The quality of raw data that been inputed

Question 9

What is information?

Answer 9

Raw data that has been processed

Question 10

What is a source document?

Answer 10

The first recorded document of an activity

Question 11

What are the two methods that data can be input into the CIS?

Answer 11

1. Batch input

2. Online input

Question 12

When raw data is captured, she does it go?

Answer 12

The CIS transaction file

Question 13

What is batch input?

Answer 13

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

Question 14

When is batch input used?

Answer 14

When huge numbers of source documents are captured and info is only needed at the same frequency as data capturing

Question 15

What is the advantage of batch input?

Answer 15

Economies of scale, because data is captured at one point instead of being dispersed

Question 16

What is the disadvantage of batch input?

Answer 16

The CIS is not always up to date all the time

Question 17

What is online input?

Answer 17

It is the immediate capture of data at the point of sale

Question 18

What is an example of online input?

Answer 18

Supermarkets use barcodes and terminals to capture data immediately

Question 19

What is the main advantage of online input?

Answer 19

The CIS is up to date immediately

Question 20

What is the disadvantage of online input?

Answer 20

It costs more because of the required hardware

Question 21

What are the different methods of processing data?

Answer 21

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

Question 22

What is classifying data?

Answer 22

Sorting data into certain categories. E.g. Cash or credit sales

Question 23

What is performing calculations of data

Answer 23

?

Question 24

What is sorting data?

Answer 24

Putting it into an orderly sequence

Question 25

What is summarizing data?

Answer 25

Condensing it to fit a certain criteria

Question 26

What is transforming data?

Answer 26

Turning it into a graph etc.

Question 27

What are the processing types?

Answer 27

1. Batch processing | 2. Real-time processing

Question 28

What is batch processing?

Answer 28

When the transaction files are processed into master files periodically at certain points

Question 29

What is the disadvantage of batch processing?

Answer 29

The master files are only up to date when they are periodically updated

Question 30

What is real-time processing?

Answer 30

The transaction files are immediately updated to master files

Question 31

What is an advantage of real-time processing?

Answer 31

The master files are always up to date

Question 32

What are the two types of output?

Answer 32

1. Batch output | 2. Interactive output

Question 33

What is batched output?

Answer 33

All requests are batched together and received periodically

Question 34

What is a disadvantage of batch output?

Answer 34

User have to usually wait for their information

Question 35

What are the advantages of batch outputs?

Answer 35

1. Reports will be consistent all the time | 2. Extraction of reports can be scheduled over downtime therefore optimizing computer resources

Question 36

What is interactive output?

Answer 36

Where the users can access the CIS and retrieve information at any point

Question 37

What is a drawback of interactive output?

Answer 37

Computer resources may not be used efficiently

Question 38

What is a flat file environment?

Answer 38

Where the users of data have their own files and do not share information with each other. E.g. Spreadsheet users that each have their own