Computer Science Fundamentals

A collection of CS study materials from various sources, including PDFs and external links covering core concepts (OS, CN, DBMS, SQL, OOP).

Resources

• Operating Systems (OS)
  Covers operating system concepts including processes, scheduling, memory management, and deadlocks.
  PDF | Read on GeeksforGeeks

• Computer Networks (CN)
  Covers computer network concepts including OSI layers, TCP/IP, DNS, HTTP, and topologies.
  PDF | Read on GeeksforGeeks

• Object Oriented Programming (OOP)
  Covers key OOP concepts with examples in multiple languages like Java, C++, and Python.
  Read on GeeksforGeeks

• Database Management Systems (DBMS)
  Covers database management along with SQL concepts including ER diagrams, normalization, and transactions.
  PDF | Read on GeeksforGeeks

• SQL
  Covers SQL queries, joins, subqueries, and aggregate functions.
  PDF | Read on GeeksforGeeks

Additional References

• 21 Days to Prepare CS Core Subjects For Placements - OS, DBMS, CN & Software Engineering