Our Combo Core Subjects Handwritten Notes have been thoughtfully curated to cater to the needs of both ambitious students pursuing their computer science graduation and individuals preparing for career-defining placements. With a focus on clarity, relevance, and concise content, these notes are your ultimate companion in unraveling the intricacies of DSA, DBMS, CN, OS, SQL .

DSA Topics Covered:

• DS Introduction
• DS Algorithm
• Asymptotic Analysis
• DS Pointer
• DS Structure
• DS Array
• Linked List
• Types of Linked List
• DS Stack
• Array Implementation
• Linked List Implementation
• DS Queue
• Types of Queues
• Linked List Representation
• Binary Tree
• Binary Search Tree
• etc….

DBMS Topics Covered:

• Introduction to DBMS:-Understanding Databases and DBMS
  -Advantages of using a DBMS
  -Data Models: Hierarchical, Network, Relational, and more
• Relational Database Concepts:-Tables, Rows, Columns
  -Keys: Primary, Foreign, Candidate, Super
  -Entity-Relationship (ER) Modeling
• SQL (Structured Query Language):-SELECT, INSERT, UPDATE, DELETE statements
  -Filtering, Sorting, Aggregation
  -JOIN operations: INNER, OUTER, CROSS, SELF
• Data Normalization:-First, Second, Third Normal Forms (1NF, 2NF, 3NF)
  -Eliminating Data Redundancy and Anomalies
• Indexing and Performance Optimization:-Importance of Indexes
  -B-Tree, Hashing, Bitmap Indexing
  -Query Optimization Techniques
• Transactions and Concurrency Control:-ACID Properties (Atomicity, Consistency, Isolation, Durability)
  -Transaction States: Active, Partially Committed, Committed, Aborted
• Database Security:-Authentication and Authorization
  -Data Encryption and Access Control
• Query Processing and Optimization:-Parsing, Validation, Translation, Execution
  -Cost-Based Query Optimization
• Distributed Databases:-Replication vs. Fragmentation
  -Distributed Query Processing
• NoSQL Databases:
  -Overview of NoSQL databases
  -Types: Document, Key-Value, Column-family, Graph

OS Topics Covered:

Chapter 1: Introduction to Operating System

• Definition of an operating System
• Functions and Goals of an Operating system
• Evolution of Operating System
• Types of Operating Systems

Chapter 2: Process Management

• Process Concepts
• Process Scheduling Algorithms
• Interprocess communication and Synchronization
• Deadlock and prevention mechanisms

Chapter 3: Memory Management

• Memory Hierarchy
• Virtual Memory Concepts
• Paging and Segmentation
• Memory Allocation and Deallocation
• Page Replacement Algorithms

Chapter 4: File Systems and Storage Management

• File Concepts and Operations
• File System Implementation
• Disk management and RAID
• File System Security and Access Control

Chapter 5: Input/Output Systems

• I/0 Devices and operations
• I/O Buffering and caching
• Disk scheduling Algorithms
• I/O Device Handling and interrupts

Chapter 6: Process Synchronization and Deadlocks

• Critical Section Problem
• Semaphores and Mutexes
• Deadlocks, Resource Allocation graph, Deadlock Prevention and Avoidance
• Deadlock Detection and Recovery

Chapter 7: CPU Scheduling

• CPU scheduling Goals.
• Scheduling Algorithms
• Thread Scheduling and Multicore Systems

Chapter 8: Security and Protection

• Security threats and Attacks
• Authentication and Authorization
• Access control and Security Policies
• Cryptography and Data Encryption

Chapter 9: Distributed Systems

• • Characteristics of distributed systems
  • Communication models
  • Distributed File Systems
  • Distributed Process Synchronization and Mutual Exclusion

CN Topics Covered:

Chapter 1: Introduction to Computer Network

Chapter 2: Physical Layer

Chapter 3: Data Link Layer

Chapter 4: Medium Access Sublayer

Chapter 5: Network Layer

Chapter 6: Transport Layer

Chapter 7: Application Layer

Chapter 8: Network Security

SQL Topics Covered:

Chapter 1: Introduction to Databases and SQL

• Understanding Databases
• What is SQL?
• Relational Databases
• The History of SQL
• Setting Up SQL Environment

Chapter 2: SQL Basics

• SQL Syntax
• SELECT Statement
• Filtering Data with WHERE
• Sorting Data with ORDER BY
• Filtering and Sorting Data Exercises

Chapter 3: Data Manipulation

• INSERT, UPDATE, and DELETE Statements
• Modifying Data
• Transaction Management
• Data Manipulation Exercises

Chapter 4: Retrieving Data with SQL

• Retrieving Data from a Single Table
• DISTINCT Keyword
• Limiting Results with LIMIT
• Retrieving Data from Multiple Tables (JOINs)
• Retrieving Data Exercises

Chapter 5: Data Filtering and Sorting

• The WHERE Clause
• Logical Operators
• Sorting Data with ORDER BY
• Advanced Filtering and Sorting Exercises

Chapter 6: Aggregating Data

• Aggregate Functions (COUNT, SUM, AVG, MAX, MIN)
• GROUP BY Clause
• HAVING Clause
• Aggregating Data Exercises

Chapter 7: Subqueries

• Subqueries in WHERE Clause
• Subqueries in SELECT Clause
• Correlated Subqueries
• Subqueries Exercises

Chapter 8: Data Modification and Transactions

• Transactions in SQL
• COMMIT and ROLLBACK
• SAVEPOINT
• Transaction Exercises

Chapter 9: Working with Dates and Times

• Date and Time Data Types
• Date and Time Functions
• Date and Time Exercises

Chapter 10: String Manipulation

• String Functions
• Concatenation
• String Manipulation Exercises

Chapter 11: Views and Indexes

• Creating and Using Views
• Indexes and Performance
• View and Index Exercises

Chapter 12: Stored Procedures and Functions

• • Creating and Calling Stored Procedures
  • Creating and Calling User-Defined Functions
  • Stored Procedures and Functions Exercises

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Benefits:

• Seamless Placement Preparation: As you gear up for placement interviews, our notes provide you with the competitive edge. Ace technical rounds by confidently demonstrating your in-depth DSA, DBMS, CN, OS, SQL Core knowledge.
• Entrance Exam Excellence: Crush entrance exams with ease. Our notes comprehensively cover DSA, DBMS, CN, OS, SQL all topics, empowering you to tackle challenging questions and secure admission to premier institutions.
• Academic Brilliance: Whether you’re striving for top grades or seeking a profound understanding of web Development principles, our notes offer the clarity and depth necessary for academic excellence.
• Interview Brilliance: Navigating technical interviews becomes smoother. Our comprehensive coverage equips you to confidently respond to interview queries and exhibit your expertise.
• Holistic Learning: From foundational principles to advanced nuances, our notes offer a holistic learning journey, irrespective of your proficiency level.

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