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File Access Methods | Dr. P. Sedhupathy | SNS Institutions

Welcome to Sedhu's MindMatrix! In this video, Dr. P. Sedhupathy discusses File Access Methods, a key concept in operating systems that determines how data is read from or written to files stored on disk.

Topics Covered:
🔹 What are File Access Methods? – Understand how operating systems provide different ways to access and manipulate data in files.

🔹 Sequential Access – Learn about the simplest and most common method where data is accessed in a linear order, one record after another.

🔹 Direct (Random) Access – Explore how files can be accessed at any location directly using a specific offset or index, ideal for databases and large structured files.

🔹 Indexed Access – Understand how an index is created to locate records quickly, combining the speed of direct access with the flexibility of sequential access.

🔹 Use Cases & Comparisons – Discover where each access method is used, and how to choose the right one based on performance and application needs.

🔹 Role of OS in Managing Access – Learn how the operating system manages access permissions, buffering, and I/O efficiency.

Instructor: Dr. P. Sedhupathy, Assistant Professor at Dr. SNS Rajalakshmi College of Arts & Science, provides a concise and insightful explanation of file access methods with real-world examples.

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