Systems Exam 1A
Terms in this set (48)
The second phase of the SDLC in which system requirements are studied and structured.
Computer software designed to support organizational functions or processes.
The third phase of the SDLC in which the description of the recommended solution is converted into logical and then physical system specifications.
The fourth phase of the SDLC in which the information system is coded, tested, installed, and supported in the organization.
Information Systems Analysis and Design
The complex organizational process whereby computer-based information systems are developed and maintained.
The part of the design phase in the SDLC in which all functional features of the system chosen for development in analysis are described independently of any computer platform.
The final phase of the SDLC in which an information system is systematically repaired and improved.
The part of the design phase of the SDLC in which the logical specifications of the system from logical design are transformed into technology-specific details from which all programming and system construction can be accomplished.
The first phase of the SDLC in which an organization's total information system needs are identified, analyzed, prioritized, and arranged.
The organizational role most responsible for the analysis and design of information systems.
Systems Development Life Cycle (SDLC)
The traditional methodology used to develop, maintain, and replace information systems. Planning-->Analysis-->Design-->Implementation-->Maintenance-->
The shortest time in which a project can be completed.
An end project of an SDLC phase.
A study that determines if the proposed information system makes sense for the organization from an economic and operational standpoint.
A graphical representation of a project that shows each task as a horizontal bar whose length is proportional to its time for completion.
A diagram that depicts project tasks and their interrelationships.
A controlled process of initiating, planning, executing, and closing down a project.
A systems analysis with a diverse set of skills-management, leadership, technical, conflict management, and customer relationship-who is responsible for initiating, planning, executing, and closing down a project.
The amount of time that an activity can be delayed without delaying the project.
Work Breakdown Structure
The process of dividing the project into manageable tasks and logically ordering them to ensure a smooth evolution between tasks.
Baseline Project Plan (BPP)
A major outcome and deliverable from the project initiation and planning phase that contains the best estimate of a project's scope, benefit, costs, risks, and resource requirements.
A type of cost-benefit analysis to identify at what point (if ever) benefits equal costs.
The justification for an information system, presented in terms of tangible and intangible economic benefits and costs and the technical and organizational feasibility of the proposed system.
The rate of return used to compute the present value of future cash flows.
A process of identifying the financial benefits and costs associated with a development project.
A benefit derived from the creation of an information system that cannot be easily measured in dollars or with certainty.
A cost associated with an information system that cannot be easily measured in terms of dollars or with certainty.
A cost associated with project start-up and development or system start-up.
The current value of a future cash flow.
Project Scope Statement (PSS)
A document prepared for the customer that describes what the project will deliver and outlines generally at a high level all work required to complete the project.
A cost resulting from the ongoing evolution and use of a system.
A benefit derived from the creation of an information system that can be measured in dollars and with certainty.
A cost associated with an information system that can be measured in dollars and with certainty.
A process of assessing the development organization's ability to construct a proposed system.
Time Value of Money (TVM)
The concept that money available today is worth more than the same amount tomorrow.
The conservation of inputs and outputs to a DFD process when that process is decomposed to a lower level.
An overview of an organizational system that shows the system boundaries, external entities that interact with the system, and the major information flows between the entities and the system.
Data Flow Diagram (DFD)
A picture of the movement of data between external entities and the processes and data stores within a system.
Data at rest, which may take the form of many different physical representations.
The extent to which all necessary components of a DFD haven been included and fully described.
The extent to which information contained on one level of a set of nested DFDs is also included on other levels.
An iterative process of breaking the description of a system down into finer and finer detail, which creates a set of charts in which one process on a given chart is explained in greater detail on another chart.
The process of discovering discrepancies between two or more sets of DFDs or discrepancies within a single DFD.
A DFD that represents a system's major processes, data flows, and data stores at a high level of detail.
A DFD that is the result of n nested decompositions from a process on a level-0 diagram.
The lowest level of decomposition for a DFD.
The work or actions performed on data so that they are transformed, stored, or distributed.
The origin and/or destination of data; sometimes referred to as external entities.