ISTM 620 chapter 1
Systems development methodology
A standard process followed in an organization to conduct all the steps necessary to analyze, design, implement, and maintain information systems.
tools
Computer Programs that make it easy to use specific techniques.
waterfall
SDLC as a methodology, think...
What is information systems analysis and design?
Systems analysis and design is a complex challenging and stimulating organizational process that a team of business and systems professionals uses to develop and maintain computer-based information systems.
lesson learned
The knowledge gained during a project which shows how project events were addressed or should be addressed in the future with the purpose of improving future performance. - most important part of close down
Systems Development Life Cycle
The traditional methodology used to develop, maintain, and replace information systems.
Object class
a logical grouping of object that have the same (or similar) attributes and behaviours (methods)
methodology
a set of policies, procedures, standards, processes, practices, tools, techniques, and tasks that people apply to technical and management challenges - standard set of steps
Object
a structure that encapsulates (or packages) attributes and the methods that operate on those attributes. It is an abstraction of a real-world thing in which data and processes are placed together to model the structure and behavior of the real-world object
flexibility
ability to customize the software
Logical Design (SDLC)
all functional features of the system chosen for development in analysis are described independently of any computer platform
Rational Unified Process(RUP)
an object-oriented systems development methodology. This methodology establishes four phases of development, each of which is organized into a number of separate iterations: inception , elaboration, construction, and transition
Application software
computer software designed to support organizational functions or processes
no
do you need a network diagram when every path is on the critical path?
uses data from similar projects
how does COCOMO deal with complexity?
RFQ
i have these specifications, how much to meet them
analysis
in which stage are the system requirements studied and structured
technique
processes that analyst use to follow the methodology
Planning
scope, and project charter are deliverable's of what phase
iron trian
scope, budget, time
Computer-aided software engineering (CASE) tools
software tools that porcode automated support for some portion of the systems development process
Object-oriented analysis and design (OOAD)
systems development methodologies and techniques based on objects rather than data or processes
Information systems analysis and design
the complex organizational process whereby computer-based information systems are developed and maintained
Maintenance
the final stage of the SDLC, in which an information system is systematically repaired and improved
Planning
the first phase of the SDLC, in which an organization's total information system needs are identified, analyzed, prioritized, and arranged
implementation phase
the fourth stage of the SDLC, in which the information system is coded, tested, installed, and supported in the organization
Physical Design Phase
the logical specifications of the system from the logical design are transformed into technology-specific details from which all programming and systems construction can be accomplished
Systems Analyst Role
the organizational role most responsible for the analysis and design of information systems
Inheritance
the property that occurs when entity types or object classes are arranged in a hierarchy and each entity type or object class assumes the attributes and methods of its ancestors- that is, those higher up in the hierarchy. The property allows new but related classes to be derived from existing classes.
Analysis
the second phase of the SDLC in which system requirements are studied and structured
Design
the third phase of the SDLC in which the description of the recommended solution is converted into logical and then physical system specifications
extreme prototyping
what is the SDLC not?
