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IB ITGS HL - 15. IT Systems in Organizations
IB ITGS HL - 15. IT Systems in Organizations
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IB ITGS HL - 15. IT Systems inOrganizations
acceptance testing- ✅✅ Testing performed by the client and users as part of the
handover process.
adaptive maintenance- ✅✅
Maintenance that changes software to make it work with a
new software environment.
agile development- ✅✅ Development method that focuses on creating small, working
parts of a project at regular intervals.
alpha testing- ✅✅ Initial testing of an IT system.
analyst-✅✅ In project development, person who documents the current system,
finding its problems and areas for improvement
✅✅ Component of an Entity Relationship Diagram.
attributes-
beta tester-✅✅ Person who attempts to find bugs in software before it is released to
customers.
beta testing- ✅✅Testing of an IT system once all features have been added and only
bugs need to be worked out.
bug tracking system- ✅✅ Used to track and manage bugs in a piece of software.
bugs-✅✅ Errors in a computer program or system, hopefully found during testing.
business case-✅✅ Analysis of the benefits and problems of a proposed IT project.
Capability Maturity Model Integration-✅✅ Quality assurance method that describes an
organisation's level of maturity.
✅✅ Property of a relationship in an Entity Relationship Diagram.
cardinality-
changeover-✅✅ Moving from an old system to a new IT system.
client-✅✅ Person or organisation who commissions an IT project.
, CMMI- ✅✅ Quality assurance method that describes an organisation's level of
maturity.
constraints-✅✅ Limitations within which an IT system must work.
corrective maintenance-✅✅ Maintenance that fixes bugs in software.
CP-✅✅ Longest (slowest) path through a project's development, as determined by
using a PERT chart.
Critical Path- ✅✅ Longest (slowest) path through a project's development, as
determined by using a PERT chart.
Custom / bespoke software- ✅✅ Software created specific for an individual or
organisation.
data collection- ✅✅Used to find information about an existing system during the
development of a new system.
Data Flow Diagram- ✅✅ Shows processes in a system and the flows of data between
them.
✅✅ The way the data within an IT system is organised and related.
data structure-
database administrator-✅✅ The person in an organisation who is responsible for
setting up, maintaining, and monitoring the organisation's database(s).
✅✅ Installing a new IT system at the client's premises.
delivery-
deployment-✅✅ Stage in the SDLC where the system is deployed at the client's site.
development manager-✅✅ In project development, person who oversees
programmers as they create the system specified in the design.
DFD- ✅✅ Shows processes in a system and the flows of data between them.
direct changeover-✅✅ Immediate removal of an old system and complete
replacement with a new IT system.
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