Online Courses
IS Auditing, Controls and Assurance
Online Courses
IS Auditing, Controls and Assurance
  • Information Systems Auditing, Controls and Assurance
  • Introduction to Information Systems (IS) Auditing
    • Risk in Information Systems (IS)
    • Risk Management Process
    • Identify Internal Controls
    • Quiz
  • General IS Audit Procedures
    • Understant the audit areas/subjects
    • Compliance Testing and Substantive Testing
    • Practice Quiz
    • Evidence
    • ISACA Outlines Five Steps to Planning an Effective IS Audit Program
    • Quiz
  • Business Application Development and the Roles of IS Auditors
    • What is business application development process / Systems Development Life Cycle (SDLC)?
      • SDLC Models
    • Feasibility and Requirements
    • Design and Selection
    • Development and Configuration
    • Configuration - Input/Output Controls
    • Implementation
    • Post-Implementation Review
    • Risks Associate with Application Development
    • Role of IS Auditor in SDLC
    • Quiz
  • IS Maintenance and Control
    • IS Maintenance Practices
    • Change Management
    • Documentation
    • Emergency Changes
    • IS Controls
    • Quiz
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  1. IS Maintenance and Control

IS Maintenance Practices

System maintenance refers to making changes or improvements to a system to make it better. This applies to all types of systems, whether they are developed in-house, purchased as a package, or customized for a specific organization. Maintenance is important because systems are not static and need to be updated or fixed over time.

There are four types of system maintenance practices:

  1. Corrective maintenance: This involves finding and fixing problems or errors in the system.

  2. Adaptive maintenance: This type of maintenance adds new features or capabilities to the system based on user or management requests.

  3. Perfective maintenance: This focuses on making the system more efficient and user-friendly without changing its capabilities.

  4. Preventive maintenance: This aims to prevent problems or vulnerabilities in the system, such as hacking or adding security features.

When users want to request a system maintenance practice, they usually fill out a form with their name, the date, and the reason for the change. It's important to also mention the expected benefits and prioritize the request. The IT department reviews these requests and decides which ones to prioritize based on their judgment and the information provided.

System maintenance costs can vary over time, starting high at the beginning, decreasing as problems are fixed, and then increasing again as new features are added, or the system becomes outdated.

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Last updated 8 months ago