Unlike a static HTML website where all content is on the actual site pages, any script-driven Internet site gathers all of its info in a database. Just a couple of examples of this type of Internet sites are a WordPress blog or an OpenCart e-commerce portal - in both cases, product or service listings, selling prices, blog posts, user feedback and so on are gathered in the database and not in the actual script files. The more the data you add, the larger the database becomes and if your hosting package has some limit for the maximum size a database can have, your Internet site may not work adequately as soon as you reach that limit. The effects can vary from not being able to include new content to poorly working Internet site or even the website showing nothing but error messages and not being available at all.