Indexing – how to find data faster

In the dynamic landscape of database management, the pursuit of optimal performance is an enduring challenge. Among the myriad tools and techniques at our disposal, indexing emerges as a linchpin in the quest for efficiency. This section explores the realms of indexing in two of the most widely used open source relational database systems: PostgreSQL and MySQL.

At its essence, indexing serves as a navigational guide within databases, propelling data retrieval into a realm of swiftness. Much like the index in a book facilitates finding specific information, indexes in databases provide a structured means to rapidly locate and retrieve data. As we embark on this journey, the focus is on understanding the core principles of indexing, exploring the types of indexes available, unraveling practical use cases, and striking a delicate balance between performance enhancement and maintenance considerations.

The pages that follow will demystify...