AI engineering glossary · SQL databases
What is relational database?
Relational database: A database that stores data as tables of rows and columns, where tables are linked by shared key values rather than nested inside one another. Data is queried with SQL. The model rests on set theory and gives strong guarantees about consistency.
Relational database: an example
An orders table holds a customer_id that points to a row in a customers table, so customer details are stored once and linked wherever needed.
Related terms
More SQL databases terms
Where you learn it
Relational database is part of the AI Engineering Program, which teaches it with notes, a hands-on lab and an exam. The first lesson is free.