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CA Gen Implementation of Function Point Analysis

Function Point Analysis (FPA) is a means of measuring the work-product or relative size of an application based on the amount of functionality delivered to the user. This technique is used in application development and maintenance both for making project estimates and measuring productivity. In FPA, the work-product is measured in Function Points.

CA Gen Function Point Calculation is based on principles presented in A. J. Albrecht's article “AD/M Productivity Measurement and Estimate Validation.”

Function Point Analysis has five major components which are identified by CA Gen as follows:

• Inputs-Elementary Process or Action Block with Update entity actions.
• Outputs-Read-Only Process with Batch implementation.
• Inquiries-Read-Only Process or Action Block with Online implementation.
• Files-Entity Type maintained by a Business System. CA Gen counts function points in terms of entity types rather than DSD objects so that you can count function points before Technical Design.
• Interfaces-Entity Type read by a Business System.