SOFTWARE MAINTENANCE

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SOFTWARE MAINTENANCE

• PART IV
• MAINTENANCE PLANNING

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Maintenance Planning

• What are the activities?
• Maintenance Plan Template

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Planning Perspectives

• Business planning
• Organizational level
• Maintenance planning
• Transition level
• Release/version planning
• Software level
• Individual software change request planning
• Request level

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(..cont) Activities

• Individual request level
• Planning is carried out during impact analysis.
• Release/version planning activities requires that
  the maintainer
• Collect the dates of availability of individual
  requests.
• Agree with users on the content of subsequent
  releases/versions.

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(..cont) Activities

• Identify potential conflicts and develop
  alternatives.
• Assess the risk of a given release and develop a
  back-out plan in case problems should arise.
• Inform all the stakeholders.

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Maintenance Plan Document

• The maintenance phase usually lasts for many
  years.
• Making estimates of resources is a key element of
  maintenance planning.
• Those resources should be included in the
  developers project planning budgets.

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(cont) Maintenance Plan Document

• Software maintenance planning should begin with
  the decision to develop a new system and should
  consider quality objectives (IEEE1061-98).
• Maintenance plan document (in general)
• The scope of the software maintenance
• Adaptation of the software maintenance process
• Identification of the software maintenance
  organization
• An estimate of software maintenance cost.

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Details of the Maintenance Plan Document (Example
from IEEE1219-98)

• Introduction
• References
• Definitions
• Software maintenance overview
• Software maintenance process
• Software maintenance reporting requirement
• Software maintenance administrative requirement
• Software maintenance documentation requirement

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1) Introduction

• Describes the purpose, goals and scope of the
  software maintenance effort
• Determines deviations from the standard.

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2) References

• Identifies the documents that pose constraints on
  the maintenance effort and any other supporting
  documents.

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3) Definitions

• Defines or references all terms required to
  understand the plan.

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4) Software Maintenance Overview

• Describes organization, scheduling priorities,
  resources, responsibilities, tools, techniques,
  and methods used in the maintenance process.

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5) Software Maintenance Process

• Identifies the actions to perform for each phase
  of the maintenance process actions are to be
  defined in terms of input, output, process, and
  control.
• Steps in software maintenance process
• IEEE/ISO standard.

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6) Software Maintenance Reporting Requirements

• Describes how information will be collected and
  provided to members of the maintenance
  organization.

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7) Software Maintenance Administrative
Requirements

• Describes the standards, practices, and rules for
  anomaly/error/problem resolution and reporting
• Problem Resolution and Reporting
• Deviation Policy
• Control Procedures
• Standards, Practices, and Conventions
• Performance Tracking
• Quality Control of Plan

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8) Software Maintenance Documentation Requirements

• Describes the procedures to be followed in
  recording and presenting the outputs of the
  maintenance process.