Essential Operating System Principles

Posted by on Aug 13, 2025 in Computers | 0 comments

Process Control Block (PCB) Essentials

The Process Control Block (PCB) is a fundamental data structure maintained by the operating system for every process. It contains all the information needed to manage and control a process. The PCB is essential for process scheduling, context switching, and execution.

Key Components of a PCB

Here are the main components typically stored in a PCB:

  • Process ID (PID): Unique identifier for the process.
  • Process State: Current status (e.g., Ready, Running, Waiting, Terminated)
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Database Concepts and Architectures Explained

Posted by on Aug 12, 2025 in Computers | 0 comments

Oracle Database Fundamentals

Oracle Memory Structures: SGA and PGA

The basic memory structures associated with Oracle are the System Global Area (SGA) and the Program Global Area (PGA). This statement is True.

Oracle Background Processes: LGWR and PMON

  • LGWR: Log Writer
  • PMON: Process Monitor

Single-User vs. Multi-User Databases

  • Single-User Database

    A database that only one user can access at a time. It is mainly used for personal or small-scale applications where simultaneous data access by multiple users

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Understanding System Software: Assemblers, Loaders, Linkers & More

Posted by on Aug 5, 2025 in Computers | 0 comments

A computer software is classified into two parts: System Software and Application Software.

  • System software is a type of computer program designed to run a computer’s hardware and application programs.
  • It is computer software designed to provide a platform for other software.
  • The Operating System is the best example of system software.
  • Other examples include: Device drivers, Language translators (Compiler, Assembler, Interpreter), etc.

Assemblers: Translating Code to Machine Instructions

An assembler

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C++ Programming Essentials: Concepts, Features, and Techniques

Posted by on Aug 4, 2025 in Computers | 0 comments

Object-Oriented Programming (OOP) in C++

C++ is a powerful programming language that supports object-oriented programming (OOP) concepts. OOP in C++ enables developers to create reusable, modular, and maintainable code.

Key OOP Concepts in C++

  1. Classes: A blueprint for creating objects, defining properties and behaviors.
  2. Objects: Instances of classes, with their own set of attributes (data) and methods (functions).
  3. Inheritance: Creating a new class based on an existing class, inheriting its properties
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Digital Audio Recording Terminology Explained

Posted by on Aug 2, 2025 in Computers | 0 comments

Digital Recording Concepts and Terms

This document defines key terms and concepts essential for understanding digital audio recording and computer hardware in audio production.

Sample Rate

The number of samples of an audio signal taken every second. Standard audio CD format has a sample rate of 44,100 samples per second, often notated as 44.1 kHz.

Nyquist Theorem

The principle stating that a sample rate must be at least twice as high as the highest frequency being sampled in order for that frequency

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Web Technologies Explained: AJAX, Semantic Web, Security, XML, XSLT, SOAP, REST

Posted by on Aug 2, 2025 in Computers | 0 comments

SOAP Protocol vs. REST Architectural Style

This section describes and compares the SOAP protocol and the REST architectural approach, outlining their uses in web communication.

SOAP (Simple Object Access Protocol)

  • It is a communication protocol for application-to-application communication.
  • SOAP messages are exchanged in XML form.
  • It often uses the HTTP protocol but supports various transport protocols.
  • It is platform independent, uses open standards, and is extensible.
  • SOAP messages ensure storing data
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