Chapter 5 - Database Management Systems by Rahim Zulfiqar Ali - CAF-3 DSR - CA ICAP 2025 DBMS скачать в хорошем качестве

Chapter 5 - Database Management Systems by Rahim Zulfiqar Ali - CAF-3 DSR - CA ICAP 2025 DBMS

DOWNLOAD - CAF 3 (DSR) Study Notes + MCQs available to Download on Google Drive. https://drive.google.com/drive/folder... A Database Management System (DBMS) is software that helps store, organize, and manage large amounts of data efficiently — much like an operating system for data. It ensures security 🔒, consistency ✅, and quick retrieval ⚡. 🧩 Main Components of DBMS 1️⃣ Database Engine – Core part that stores and retrieves data. 2️⃣ Query Processor – Interprets SQL commands and optimizes them 🧠. 3️⃣ Transaction Manager – Ensures ACID properties (Atomicity, Consistency, Isolation, Durability) 💼. 4️⃣ Storage Manager – Handles how data is physically stored 💾. 5️⃣ Security Manager – Controls access, authentication, and encryption 🔐. (Also includes Metadata & Concurrency Control Managers.) ⚙️ DBMS Architecture (Three-Level Schema) 1️⃣ External Level (View) – What users see 👀 2️⃣ Conceptual Level (Logical) – Defines entities, attributes, and relationships 🧱 3️⃣ Internal Level (Physical) – How data is stored on disk 💽 ➡️ Provides data abstraction and data independence. 💡 ACID Properties Atomicity: All or nothing 🔁 Consistency: Data remains valid ✅ Isolation: Transactions don’t interfere 🚫 Durability: Data persists after commit 💾 🧠 Additional Characteristics Data Security & Authorization 🔒 Data Consistency & Integrity 🧩 Concurrency Control 👥 Backup & Recovery ♻️ Redundancy Control 🧹 Data Abstraction 🎭 🏛️ Data Independence Logical: Change structure without affecting user views 🔄 Physical: Change storage method without altering logical schema 💽➡️☁️ 🧍‍♂️ ER Model (Entity–Relationship) A visual blueprint showing how entities (like Student, Course, Instructor) relate. 💠 Components: Entities, Attributes, Relationships (1:1, 1:N, M:N), and Weak Entities. #CAF3 #DataSystemAndRisk #ICAP #CAFPreparation #CAStudent #RiskManagement #DataSystems #ExamPreparation #StudyWithMe #ICAPSyllabus #capakistan #ICAP #NewEducationScheme2025 #CAF #DataSystemAndRisk #CAStudents #CASyllabus2025 #CAUpdates #ICAPPakistan #CharteredAccountancy #CAJourney #BusinessValuation #StudyICAP 📢 DISCLAIMER & REQUEST: This video is the intellectual property of [Rahim Zulfiqar Ali / Excel Basement]. Unauthorized downloading, re-uploading, or redistribution of this content on any other platform (including YouTube, LinkedIn, Facebook, TikTok, Instagram, or any third-party websites) is strictly prohibited. 🔒 All Rights Reserved