An Introduction to SQL: The Language of Data
A beginner's guide to SQL (Structured Query Language). Learn the fundamental concepts and the basic syntax for querying and manipulating data in relational databases.
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What is an ORM?
A conceptual guide to Object-Relational Mapping (ORM). Learn what an ORM is, the problem it solves (the object-relational impedance mismatch), and how it allows you to work with databases using the objects and classes of your favorite programming language.
Read moreWhat is a Relational Database?
A foundational guide to relational databases. Learn the core concepts of tables, rows, columns, and keys, and understand how SQL is used to define and manipulate the structured data within them.
Read moreA Guide to Basic SQL Commands
A beginner's guide to the fundamental commands of SQL (Structured Query Language). Learn how to use SELECT, INSERT, UPDATE, and DELETE to query and manipulate data in a relational database.
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