Ch 8 - Systems Development
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46 Terms
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DFDs
________: describe the activities that fulfils a business relationship or accomplish a business task.
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Software
________: Can be purchased from external vendors or developed in house.
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OOSD (object oriented)
________: identifies potential problems and opportunities.
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Critical path
________: activities that, if delayed, would delay the entire project.
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Requirements analysis
________: determines user, stakeholder, and organisational needs.
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Data modelling
________: accomplished through the use of entity- relationship (ER) diagram.
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Environmental design
________: Involves systems development efforts that slash power consumption and take less physical space.
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Systems operation
________: The use of a new or modified system.
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**Development team**
* Determines objectives of the information system
* Delivers system that meets objectives
* Delivers system that meets objectives
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**Project**
Planned collection of activities that archives a goal
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**Stakeholders**
People who benefit from a project
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**Users**
People who interact regularly with the system
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**Systems** **analyst**
Professional who specialises in analysing and designing business systems
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**Programmer**
Responsible for modifying or developing programs to satisfy user requirements
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**Individual systems developer**
person who performs all of the systems development roles
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**Individual users**
acquire applications for both personal and professional use
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**End-user** **systems** **development**
describes any systems development project in which business managers and assume the primary effort
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**Prototyping**
An iterative approach
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**Outsourcing and on-demand computing**
Reasons for using outsourcing and on-demand computing approaches
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**Managing change**
essential to recognise and deal with existing or potential problems
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**Object-oriented systems development**
Combines logic of systems development life cycle with power of object-oriented modelling and programming
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**Data modelling**
accomplished through the use of entity-relationship (ER) diagram
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**IS vendor**
Company that offers hardware, software, telecommunications systems, databases, IS personnel, or other computer-related resources
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Individual systems developer
person who performs all of the systems development roles
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Individual users
acquire applications for both personal and professional use
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End-user systems development
describes any systems development project in which business managers and assume the primary effort
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Information systems planning
translating strategic and organisational goals info systems development initiatives
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Aligning goals and IS goals
critical for successful systems development effort
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Systems investigation
identifies problems and identities and considers them in a light of business goals
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Systems analysis
studies existing systems and work processes to identify strengths, weaknesses, and opportunities for improvement
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Systems design
defines how the information system will do what it must to obtain the problems solution
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Systems implementation
creates or acquires various system components details in systems design, assembles them, and places new or modified system info operation
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Systems maintenance and review
ensures the system operates as intended
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Rapid application development (RAD)
employs tools, techniques, and methodologies designed to speed application development
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Managing change
essential to recognise and deal with existing or potential problems
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Project schedule
detailed description of what is to be done
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Project milestone
critical date for completion of a major part of the project
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Project deadline
date the entire project is set to be completed and operational
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DFDs
describe the activities that fulfils a business relationship or accomplish a business task
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Logical design
describes functional requirements of a system
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Physical design
specifies the characteristics of the system components necessary to put the logical design into action
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Purpose of systems design
To prepare the detailed design needs for a new system or modifications to an existing system
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Purpose of systems implementation
To install a system and make everything, including users, ready for its operation
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IS vendor
Company that offers hardware, software, telecommunications systems, databases, IS personnel, or other computer-related resources
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Software
Can be purchased from external vendors or developed in house
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Systems operation
The use of a new or modified system