Indexes Explained | System Design Concepts | What Is Database Index | How Database Index Works
Hi, in this video we will discuss Database Index. It is one of the most important technical topics in system design and mainly in database design. Used in various real-world applications and one of the most common software development interview questions (either directly or implicitly wrapped around another question). We will look at what is database index, how database index works, types of indexes, examples of database index and benefits of database index.
An index is a data structure that improves the speed of data retrieval operations on a table or other data structure. Indexes create a separate data structure that maps the values of columns to their physical location in the database. This allows the DB to quickly locate the relevant records based on the values in the indexed columns.
TABLE OF CONTENTS
• 00:00 Introduction
• 00:42 What is Index | What is Database Index
• 02:00 Index Examples - Find, Query, Search, Composite Indexes | How Database Index Works
• 06:42 Types of Database Index - Clustered Index , Non-Clustered Index
• 08:15 Benefits of Database Index
• 11:13 Risks of Database Index
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