• Define indexes
• Set the properties of indexes
• Determine when to use an index

Database Indexes

Let’s explore how indexes help databases work more efficiently through some real-world scenarios and hands-on practice.

Now let’s practice with index properties:

Let’s apply what we’ve learned about when NOT to use indexes. Consider different tables within our community library database:

Remember: Indexes are powerful tools for improving database performance, but they should be used strategically. Consider factors like table size, query frequency, and data uniqueness when deciding whether to create an index.

Indexes

• Indexes speed up searches but add overhead to updates
• They’re most useful on fields that are frequently searched
• Primary keys are automatically indexed
• Consider the tradeoffs between performance and maintenance