Explain about the incremental model.

• Have similar phases as the waterfall model.
• Phases are

Analysis.

Design.

Code.

Test.

• Incremental model delivers series of releases to customers known as increments.
• The first increment is known as core product. Here only the document processing facilities are available.
• Second increment, more sophisticated document forming and processing facilities are available.
• Next increment spelling and grammar checking facilities are given.

Merits

• This model can be adopted when there is less number of people included in the project.
• Technical risks can be managed with every increment.
• For a very small time span, at least core product can be delivered to the customer.