Databases Demystified: From SQL to NoSQL
Databases Demystified: From SQL to NoSQL Databases help apps store and fetch data. Two big families exist: SQL databases use tables, rows, and fixed schemas. NoSQL databases offer documents, key-value pairs, and other flexible formats. Both aim to support fast, reliable data access, but they solve problems in different ways. Understanding SQL and relational models SQL databases use a relational model. Tables hold data in rows and columns. Relationships are shown with keys, and queries pull exact results. They often enforce ACID rules to keep data correct, even during concurrent use. If your data is well defined and relationships are important, SQL stays strong and predictable. ...