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Software Measurement and Metrics

  • Difficulty Level : Easy
  • Last Updated : 18 Mar, 2020

Software Measurement: A measurement is an manifestation of the size, quantity, amount or dimension of a particular attributes of a product or process. Software measurement is a titrate impute of a characteristic of a software product or the software process. It is an authority within software engineering. Software measurement process is defined and governed by ISO Standard.

Need of Software Measurement:
Software is measured to:

  1. Create the quality of the current product or process.
  2. Anticipate future qualities of the product or process.
  3. Enhance the quality of a product or process.
  4. Regulate the state of the project in relation to budget and schedule.

Classification of Software Measurement:
There are 2 types of software measurement:

  1. Direct Measurement:
    In direct measurement the product, process or thing is measured directly using standard scale.
  2. Indirect Measurement:
    In indirect measurement the quantity or quality to be measured is measured using related parameter i.e. by use of reference.

A metrics is a measurement of the level that any impute belongs to a system product or process. There are 4 functions related to software metrics:

  1. Planning
  2. Organizing
  3. Controlling
  4. Improving

Characteristics of software Metrics:

  1. Quantitative:
    Metrics must possess quantitative nature.It means metrics can be expressed in values.
  2. Understandable:
    Metric computation should be easily understood ,the method of computing metric should be clearly defined.
  3. Applicability:
    Metrics should be applicable in the initial phases of development of the software.
  4. Repeatable:
    The metric values should be same when measured repeatedly and consistent in nature.
  5. Economical:
    Computation of metric should be economical.
  6. Language Independent:
    Metrics should not depend on any programming language.

Classification of Software Metrics:
There are 2 types of software metrics:

  1. Product Metrics:
    Product metrics are used to evaluate the state of the product, tracing risks and undercovering prospective problem areas. The ability of team to control quality is evaluated.
  2. Process Metrics:
    Process metrics pay particular attention on enhancing the long term process of the team or organisation.
  3. Project Metrics:
    Project matrix is describes the project characteristic and execution process.
    • Number of software developer
    • Staffing pattern over the life cycle of software
    • Cost and schedule
    • Productivity

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