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Explore the core components of a Distributed File System (DFS) — replication, scalability, and consistency — and how they contribute to the reliability, performance, and integrity of distributed storage solutions.

Understand the internal architecture of a distributed file system (DFS), including key components like metadata servers, data nodes, replication mechanisms, and a real-world example using Hadoop HDFS.

Learn what a Distributed File System is, how it works, its key features, examples like HDFS and GFS, and common use cases such as cloud storage and big data processing.

A Clustered Index controls the physical order of data in a table, making range queries and sorting extremely fast. It organizes rows on disk by the index key and is usually the primary key, with only one clustered index allowed per table.

A Composite Index combines two or more columns into a single index to speed up queries filtering or sorting by multiple fields. Column order matters, and the index supports queries starting with the leftmost column(s).