AIN2601 - QUESTIONS - study guide
1.EASY TO UNDERSTAND
When does raw data become valuable?
When processed into information and used for decision making.
What is the difference between data and information?
Information is data that have been processed into something
meaningful that can be used in decision making.
What are the steps in the computerised information system process?
Activities
Data entry
Data processing
Output and storage of data and information
Making decisions
List the characteristics of quality data.
Accurate
Complete
Reliable
Verifiable
Define Source Document
The first documented record of an activity that took place.
Name two input methods.
batch input
online input
Define batch input.
similar source documents grouped together, and entered in the CIS
periodically (daily / weekly / monthly)
When is batch input suitable?
When a huge number of similar source documents must be captured;
When up-to-date data and information are only required on the same
frequency as the frequency of data capturing.
What is the advantage of batch input?
Increased productivity
lower hardware cost
What is the disadvantage of batch input?
The CIS is not up to date with the latest data and information.
Define online input
data being immediately captured into the CIS at the point where the
activity occurs
What is the advantage of online input?
, The data in the CIS is always up to date.
What is the disadvantage of online input?
More costly than batch as hardware is required to capture the data at
each point where the activity to be captured takes place.
What methods can be used to process data into information?
classifying data
performing calculations
sorting data
summarising data
transforming data
Give an example of the processing method 'classifying data'.
Cash sales vs credit sales
Give an example of the processing method 'performing calculations'.
Calculating the cost per unit (cost / number of units)
Give an example of the processing method 'sorting data'.
Customer names in alphabetical order
Give an example of the processing method 'summarising data'.
Extracting all the transactions for one specific supplier.
Give an example of the processing method 'transforming data'.
Data is converted into a graph
Name the two processing types.
Batch processing
real-time processing
Define batch processing
when the transaction files are updated to the master files
periodically (daily / weekly / monthy)
Define real-time processing
the immediate update of the transaction files to the master files as
the transaction occurs
What is the greatest advantage of real-time processing?
the master files are always up to date
Name the two output types.
batch output
interactive output
Define batch output
when all requests for information are processed periodically (daily /
weekly / monthly)
Define interactive output
when users are directly connected to the CIS and can request certain
information and receive it immediatey
Name the four typical processing systems.
batch input, batch processing and batch output;
batch input, batch processing and interactive output;
1.EASY TO UNDERSTAND
When does raw data become valuable?
When processed into information and used for decision making.
What is the difference between data and information?
Information is data that have been processed into something
meaningful that can be used in decision making.
What are the steps in the computerised information system process?
Activities
Data entry
Data processing
Output and storage of data and information
Making decisions
List the characteristics of quality data.
Accurate
Complete
Reliable
Verifiable
Define Source Document
The first documented record of an activity that took place.
Name two input methods.
batch input
online input
Define batch input.
similar source documents grouped together, and entered in the CIS
periodically (daily / weekly / monthly)
When is batch input suitable?
When a huge number of similar source documents must be captured;
When up-to-date data and information are only required on the same
frequency as the frequency of data capturing.
What is the advantage of batch input?
Increased productivity
lower hardware cost
What is the disadvantage of batch input?
The CIS is not up to date with the latest data and information.
Define online input
data being immediately captured into the CIS at the point where the
activity occurs
What is the advantage of online input?
, The data in the CIS is always up to date.
What is the disadvantage of online input?
More costly than batch as hardware is required to capture the data at
each point where the activity to be captured takes place.
What methods can be used to process data into information?
classifying data
performing calculations
sorting data
summarising data
transforming data
Give an example of the processing method 'classifying data'.
Cash sales vs credit sales
Give an example of the processing method 'performing calculations'.
Calculating the cost per unit (cost / number of units)
Give an example of the processing method 'sorting data'.
Customer names in alphabetical order
Give an example of the processing method 'summarising data'.
Extracting all the transactions for one specific supplier.
Give an example of the processing method 'transforming data'.
Data is converted into a graph
Name the two processing types.
Batch processing
real-time processing
Define batch processing
when the transaction files are updated to the master files
periodically (daily / weekly / monthy)
Define real-time processing
the immediate update of the transaction files to the master files as
the transaction occurs
What is the greatest advantage of real-time processing?
the master files are always up to date
Name the two output types.
batch output
interactive output
Define batch output
when all requests for information are processed periodically (daily /
weekly / monthly)
Define interactive output
when users are directly connected to the CIS and can request certain
information and receive it immediatey
Name the four typical processing systems.
batch input, batch processing and batch output;
batch input, batch processing and interactive output;
