System Development Life Cycle (SDLC), Slides of History of Art

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SYSTEMS DEVELOPMENT LIFE

CYCLE (SDLC)

FIRST PHASE

The people involved in the first phase are:

1. the users,
2. analysts, and
3. systems managers coordinating the project. Activities in this phase consist of:
4. interviewing user management,
5. summarizing the knowledge obtained,
6. estimating the scope of the project, and documenting the results.

SECOND PHASE

The analyst enters is that of determining the

human needs of the users involved, using a

variety of tools to understand how users

interact in the work context with their current

information systems.

The analyst should understand how users accomplish their work when interacting with a computer and begin to know how to make the new system more useful and usable

THIRD PHASE

The systems analyst undertakes involves analyzing system

needs. Again, special tools and techniques help the analyst

make requirement determinations. Tools such as data flow

diagrams (DFD) to chart the input, processes, and output

of the business’s functions, or activity diagrams or

sequence diagrams to show the sequence of events,

illustrate systems in a structured, graphical form.

THIRD PHASE

Tools needed in analyzing system needs:

1. Flow chart
2. Gantt chart
3. Methodology
4. Data Flow Diagram There are three major methods for the analysis of structured decisions:
5. structured English,
6. decision tables, and
7. decision trees.