Relational database design theory is an enormous topic, but you can learn a few principles that can get help you design an efficient travel database for your website.

A classic example of relational database design, this would be nearly impossible to do in a spreadsheet but was easy to put together in Airtable.

Microsoft Dataflex is a low-code relational database that helps businesses build and deploy Power Platform apps and chatbots for Microsoft Teams.

Relational database management system advantages and disadvantages are often tied together. While they are easy to use, for example, they can be complex and expensive to design and set up.