Databases Demystified: Storage, Queries, and Performance
Databases Demystified: Storage, Queries, and Performance Databases store data in files and use a query language to retrieve it. They separate storage from processing, so you can scale storage and compute more independently. In this post, we cover three building blocks: storage and data models, how queries are processed, and practical tips to improve performance. Storage and Data Models Storage engines decide how data is written, stored, and recovered. They affect durability, speed, and recovery after a crash. Relational databases use tables, rows, and columns, while NoSQL options may store documents, key-value pairs, or wide-column data. Data models shape how you organize information and how easy it is to run common operations. ...