Software development life cycle consists of four phases.

That is,

1.Analysis

2.Design

3.Implementation and

4.Testing

1.Analysis: Define the goals.Gathering the requirements to

develope a software for customer satisfaction.Aanalyse that

how to use and design?.

2.Design: Detailed design the requirements as a structure.

3.Implementation: Implement the detailed design with

designed code.

4.Testing: Check the whether the software will work

properly or satisfies the customer expectation.

If it is satisfies the customer needs, that software

properly produced.

This is software development life cycle.