What is functional point estimation technique?

Advertisements. A Function Point (FP) is a unit of measurement to express the amount of business functionality, an information system (as a product) provides to a user. FPs measure software size. They are widely accepted as an industry standard for functional sizing.

How is EIF calculated?

The indicative function point analysis method is performed as follows:

  1. Determine the number of data functions (ILFs and EIFs);
  2. Calculate the total unadjusted function point count of the application as follows: indicative size (fp) = 35 x number of ILFs + 15 x number of EIFs.

What is high weighting factor of EQ for counting function point?


Measurement Parameter Count Weighing factor
1. Number of external inputs (EI) 24 4 = 96
2. Number of external outputs (EO) 46 4 = 184
3. Number of external inquiries (EQ) 8 6 = 48
4. Number of internal files (ILF) 4 10 = 40

What are the objectives of functional point FP analysis?

Objectives of FPA:

The objective of FPA is to measure the functionality that the user requests and receives. The objective of FPA is to measure software development and maintenance independently of the technology used for implementation. It should be simple enough to minimize the overhead of the measurement process.

What is function point Analysis explain in detail with example?

Function Point Analysis (FPA) is a sizing measure of clear business significance. First made public by Allan Albrecht of IBM in 1979, the FPA technique quantifies the functions contained within software in terms that are meaningful to the software users.

What are the five components of function point metric?

Function point estimates the size of a software project using five elements: Internal Logical Files (ILF), External Interface Files (EIF), External Inputs (EI), External Outputs (EO) and external Enquiries (EQ).

What is function point explain its importance?

The function point is a “unit of measurement” to express the amount of business functionality an information system (as a product) provides to a user. Function points are used to compute a functional size measurement (FSM) of software. The cost (in dollars or hours) of a single unit is calculated from past projects.