Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ACF211 > Week 4 - Accounting Information Systens Development > Flashcards

Week 4 - Accounting Information Systens Development Flashcards

1
Q

What are the 5 stages in the Systems Development lifecycle?

A
  1. Systems Analysis
  2. Conceptual Design
  3. Physical Design
  4. Implementation and Conversion
  5. Operations and Maintenance
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is one of the main things included in Phase 1: Systems Analysis?

A

A feasibility study

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the purpose of a Feasibility study?

A

To determine whether the system we are looking at will be fit for our purpose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What 5 things are considered in a feasibility study?

A
  1. Economic - Do the benefits outweigh the costs?
  2. Technical - Can we use the existing hardware with the new system?
  3. Legal - Does the system comply?
  4. Scheduling - Can the system be developed in the allocated time?
  5. Operational - Do we have the people to develop the system?
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the second stage of the systems development lifecycle and what does it involve?

A

The second stage is: Conceptual Systems Design

The developer of the system evaluates what is the best way to design the system. What fields do we need? What layout suits our needs?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the third stage in the systems development lifecycle? And what elements are considered in this stage?

A

The third stage is: Physical Systems Design.

This stage is concerned with actually building the new system.
Output design
File and Database design
Input Design
Program design
Control design
Are all considered in this stage of the systems development lifecycle.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the fourth stage of the systems development lifecycle?

A

The fourth stage is the Implementation and conversion stage.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What needs to be considered in the fourth stage of the systems development lifecycle?

A

Implementation plan - Develop a timetable of all activities.
Select and train staff
Test the system
Plan system conversion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the three ways to test a system?

A
  1. Walk through
  2. Processing test data
  3. Acceptance test
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How is a ‘Walk Through’ test completed?

A

One transaction is took through the system step-by-step to asses whether the system is working correctly.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How is a ‘Processing Data Test’ conducted?

A

Multiple valid samples of test data are sent through the new system and the results compared with what should have been outputted.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How is an ‘acceptance test’ conducted?

A

Real sets of old data (last months) are put through the new system and compared to the results from the old system.

This has the benefit that the data used is from the actual company and is therefore more useful in assessing how well the new system performs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the four ways in which we can carry out systems conversion?

A
  1. Direct Conversion
  2. Parallel Conversion
  3. Phase-in Conversion
  4. Pilot Conversion
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Describe Direct conversion

A

The old system is terminated and the new system begins immediately.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Describe Parallel Conversion

A

Operate the old and new system simultaneously for a period of time.

When we are confident the new system is working correctly, the old system is turned off.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Describe Phase-in Conversion

A

Elements of the old system are replaced with elements of the new system, over time the entire old system is replaced.

17
Q

Describe Pilot Conversion

A

The new system is implemented in only one department to start, if it works well it is rolled out throughout the organisation

18
Q

What is phase 5 of the systems development lifecycle? And what sort of considerations are made in this phase?

A

Phase 5: Operations and Maintenance.
Once a new system has been implemented, it is important to review it.
- Does the system meet the organisations goals?
- Are users satisfied?
- Is the system reliable?
- Is the systems accurate?
- Is the system sufficiently safeguarded from error?
- Is everyone trained to use the new system?

19
Q

List the 7 reasons for behavioural problems occurring I systems development.

A
  1. Fear - Fear of failure/unknown/losing status/pressure
  2. Lack of top management support
  3. Bad prior experiences - Previous system experience wasn’t good?
  4. Poor communication - Employees don’t understand why change is needed?
  5. Disruption - Effects the internal ecosystem and throws things off.
  6. Biases and emotions
  7. Personal Characteristics - Age/Openness to new tech?
20
Q

Give 4 ways to mitigate behavioural problems.

A
  • Management support
  • Satisfy users needs
  • Involve users in development
  • Provide sufficient training
  • Performance evaluate
  • Test prior to new system implementation
  • Keep the system simple
21
Q

What are the three ways in which a new AIS can be obtained?

A
  1. Purchase
  2. Develop in-house
  3. Outsource to outside organisation
22
Q

What is the process for purchasing a new system?

A
  1. Select a vendor
  2. Request for proposal (RFP) that meets needs.
  3. Evaluate proposal
  4. Make selection based upon criteria
23
Q

Name some advantages and disadvantages of developing a new IAS in-house

A

Advantages:

  • Tailer to meet needs of company
  • In-built flexibility for growth
  • ‘Local Expertise’ - Issues can be solved sooner.

Disadvantages:

  • Requires significant time, energy and money.
  • Complexity of the system may be limited when developed in house.
  • Lack of Qualified staff
  • Poor top management support
24
Q

Name some advantages and disadvantages of outsourcing to outside organisation

A

Advantages:

  • Allows companies to concentrate on their core business activities.
  • Access greater experience and expertise.
  • Takes less time to develop and implement.
  • Facilitate downsizing (make people redundant)

Disadvantages:

  • Inflexibility
  • Loss of control
  • Poor service
  • Lack of ‘local knowledge’.
  • Increase risk
25
Q

Describe what is meant by the term ‘End-User computing’?

A

End-user computing occurs when managers begin to formulate their own system (spreadsheets). This is then repeated by all departments and before you know it, an entirely different set of systems are operating undercover.

26
Q

List 3 advantages and disadvantages of end-user computing.

A

Advantages:

  • More likely to meet users needs.
  • Saves time for end-users.
  • Frees up main system resources.
  • Easy to use and understand.

Disadvantages:

  • Lack of systems testing.
  • Inefficient systems.
  • Poorly controlled.
  • Poorly documented.
  • Duplication of data.

ACF211 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions