Introduction to Databases

Introduction to Databases: What is a Database?, Why Do We Need Data Storage?, What is an RDBMS.

Updated November 3, 2026

1. What is a Database? (Novice): A database is an organized place where an application stores its information so it can manage it and find it again quickly.
2. Why Do We Need Data Storage? (Novice): Applications keep their data in a database to have it in one place, keep it accurate and secure, manage it quickly, and grow as the data grows.
3. What is an RDBMS (Novice): A relational database management system (RDBMS) such as SQL Server stores data in tables of rows and columns, and links the tables with primary and foreign keys.