Overview
Indexes are special data structures in databases that help speed up the retrieval of rows from a table. They work like an index in a book, allowing the database to find data quickly without scanning the entire table. Understanding how indexes work and how to create them is essential for optimizing database performance and ensuring efficient data access.
📚 Key Learning Objectives
- ✓ Define what an index is in a database context.
- ✓ Explain the purpose and benefits of using indexes.
- ✓ Identify different types of indexes available in databases.
- ✓ Create a basic index for a database table.
- ✓ Analyze the impact of indexes on query performance.
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