Tutorial Tests Flashcards
Name the various costs associated with managing information within a business.
Production Distribution Security Storage Retrieval of information
Three roles associated with a systems analyst
Consultant
Supporting expert
Agent of change
What is CASE?
Computer-Aided Software Engineering
CASE is productivity tools created explicitly to improve routine work through the use of automated support
Object-oriented analysis and design
An approach intended to facilitate the development of systems that must change rapidly in response to dynamic business environments
Four characteristics of systems
- interrelated
- interdependent
- process inputs from their environment, i.e., change or transform inputs into outputs
- all systems are contained by boundaries separating them from their environment
- feedback is a form of system control
What is ERP?
Enterprise Resource Planning
An ERP system is an information system which integrates business functions on various levels across different departments
Name two well-known ERP packages
SAP
Oracle
What are the three levels of management in an organisation?
- Strategic management
- Managerial planning and control
- Operational control
Name 4 general considerations when regarding project selection
The backing of management is essential
Timing of the project; capability of making time for the project
Possibility of improving attainment of strategic organisational goals
Practicality in terms of resources and capabilities ; make sure the project falls within your field of expertise
Worthiness of the project; it needs to be worthwhile
Explain the 3 types of feasibility
- Technical feasibility
- considering whether it is possible to develop the new system given the current technical resources - Economic feasibility
- considering time and cost involved - Operational feasibility
- considering human resources available and whether the system will operation and be usable once put into service
Advantages of buying computer hardware (as opposed to using cloud services)
- full control over hardware and software
- often cheaper in the long run
- provides tax advantages through depreciation
Disadvantages of buying computer hardware (as opposed to using cloud services)
- initial cost is high
- risk of obsolescence
- risk of being stuck if choice was wrong
- full responsibility for operation and maintenance
Advantages of using cloud services (as opposed to buying computer hardware)
- maintenance and upgrades performed by provider
- ability to change software and hardware rapidly
- scalable (can grow quickly)
- consistent over multiple platforms
- no capital tied up
Disadvantages of using cloud services (as opposed to buying computer hardware)
- company doesn’t control its own data
- data security is at risk
- reliability risks of the Internet platform
- proprietary APIs and software may make switching providers difficult
Name 4 kinds of prototypes used
- patched-up prototype
- non-operational prototype
- first-of-a-series prototype
- selected features prototype
In Agile Modelling, what are the four values which create an environment in which both developers and businesses can be adequately served?
- communication
- simplicity
- feedback
- courage
What does a use case model describe of a system?
It describes what the system does without describing how it is done
What does UML stand for?
Unified Modelling Language
Describe a class
Defines the set of shared attributes and behaviours of objects
Describe an object
Any person, thing, event, that is relevant to the system being analysed, i.e., an instant of a class