Database schema A schema is the structure or blueprint of a database. Defines how data is organised and how relationships are managed. Types of Schema Physical Schema – How data is stored on disk. Logical Schema – structure of the database (tables, relationships) View Schema – customised views for users. Data Model A data model […]
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Hype Cycle for Emerging Technologies 2025 What is Data Science? Definition: Data science combines math and statistics, specialized programming, advanced analytics, artificial intelligence (AI) and machine learning with specific subject matter expertise to uncover actionable insights hidden in an organization’s data. These insights can be used to guide decision making and strategic planning. Link: What
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What is an Algorithm? An algorithm is simply a set of rules for carrying out some calculation. either manually or on a machine. Example: the most basic algorithms one can think of are those related to addition, subtraction, multiplication and division of numbers. Types of Algorithms: Correct algorithms: Its output is always the correct answer
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Introduction In the modern digital era, almost every system we interact with—online shopping, banking, social media, and university portals—relies on database systems. Databases help organizations store, manage, and retrieve large volumes of data efficiently and securely. This article provides a clear and beginner-friendly introduction to database systems, explaining key concepts such as data, databases, DBMS,
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There are four main structural components of the computer: Central Processing Unit (CPU) – controlsthe operation of the computer andperforms its data processing functions Main Memory – stores data Input/Output (I/O) – moves data betweenthe computer and its external environment System Interconnection (Bus) – somemechanism that provides forcommunication among CPU, main memory,and I/O The Computer
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Boot the Computer When a computer is powered on, several key processes occur to ensure the hardware is functioning and the system starts correctly. 🧪 POST (Power-On Self-Test) 🔧 Tech Tip: To test POST functionality: 💾 BIOS (Basic Input/Output System) BIOS Responsibilities: 🧠 CMOS (Complementary Metal Oxide Semiconductor) ⚠️ Warning Sign: If system time/date resets
HTML HTML (HyperText Markup Language):HTML is the standard language used to create and design web pages, utilizing tags and attributes to structure content. Brief History of HTML: Getting Started with HTML Development What You’ll Need: Getting Started: Creating Your First HTML Page Opening Your First HTML Page Creating the same HTML page using a different
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Introduction One of the most satisfying parts of writing and running a program is realizing that you are in control of the computer. However, if you reflect on the programs you’ve created so far, how much control did you truly have? While you were the one who chose which instructions to include, the order in
System Development Methodologies Welcome to our detailed guide on System Development Methodologies. Whether you’re a student, professional, or tech enthusiast, understanding how software is developed is crucial in today’s digital world. Let’s dive deep into key methodologies like SSADM, Waterfall, Agile, Kanban, Scrum, and more. What is System Development? System development involves a structured series
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Objectives: Introduction The “Hello World” program we created in first Topic is, of course, very simple. One of its main limitations is that it doesn’t work with any data. For a program to produce meaningful results, it must be able to store and manipulate data. For example, a calculator would be useless if it couldn’t
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