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Test 1 - Chapter 5
Terms in this set (51)
Commercial software trends:
cost is dropping relative to in-house
more industry - specific software
more small businesses purchasing commercial software
downsizing has increased the demand for commercial software
Types of Systems
Types of Commercial Systems
basic system structure, user builds on the structure.
vendor develops and maintains a custom system.
System Acquisition - Commercial System Advantages
Short implementation time.
More reliable (already tested).
System Acquisition - Commercial System Disadvantages
Dependent upon software developer.
Can not fully customize.
More difficult to perform maintenance.
Systems Development Life Cycle (SDLC)
1. Systems planning
2. Systems analysis
3. Conceptual systems design
4. System evaluation and selection
5. Detailed design
6. Application programming and testing
7. System implementation
Phase 1: Systems Planning
link projects to the strategic objectives of the firm.
Phase 2: Systems Analysis
understand; 1) the current system, and 2) system needs.
data sources, users, data stores, processes, data flows, controls and transaction volume.
Advantage to survey
better understanding of current system
Disadvantage to survey
Time-consuming and can hinder innovation
Phase 3: Conceptual Design
to provide several alternative conceptual systems.
Phase 4: Evaluation and Selection
to select the best conceptual design.
How to to select the best conceptual design - step 1
Operational (business practices and employee skills)
How to to select the best conceptual design - step 2
hardware, software, design, programming, testing training and data conversion
Maintenance, insurance, supplies and personnel.
Escapable costs and new revenues.
Customer satisfaction, response time, information for decision making, flexibility and controls.
How to to select the best conceptual design - step 3
compare costs and benefits.
Phase 5: Detailed Design
to produce detailed description of the system.
Phase 6: Application Programming and Testing
to select a programming language and program the system.
Application Programming and Testing - Accounting/Auditor issue
ensure systems are adequately tested offline prior to going online.
Phase 7: Implementation
get the system running:
How to get the system running
cutover to the new system
Cold turkey - turn off old system.
Phased - only install some modules.
Parallel - run old and new system.
Audit Objectives - verify that
SDLC activities are authorized.
New system is tested and free from errors.
Systems documentation is adequate.
Controls are adequate.
Maintenance was authorized
Applications are free from material errors
Centralized systems produce _______of all program changes.
___________________systems using UNIX only provide the date of the last program change
Distributed Data Processing (DDP)
With DDP and UNIX auditor must rely _________________ to verify authenticity of program changes.
what management does
Low quality raw materials - is a p/s
symptom, but could argue either way depending on the circumstances
Defective production process - is a p/s
Declining market share - is a p/s
Shortage of raw material from drought - is a p/s
could be a problem or a symptom
Shortfall in cash - is a p/s
Shortage of AP employees - is a p/s
could be a problem or symptom
Inadequately trained workers - is a p/s
Decreasing customer satisfaction - is a p/s
THIS SET IS OFTEN IN FOLDERS WITH...
AC 589 Chapter 1
Test 1 - Chapter 7
Test 1 - Chapter 2
Test 1 - Chapter 3
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