Online catalogues for extensive product ranges are best created using website technology that allows you, the user, to update your catalogue yourself, keeping the content up-to-date and relevant to consumers.

Database-driven sites can be useful for;
Organisations or publications that need to publish a great deal of content (e.g. in the tourism sector) or for an online publication.

Retail & ecommerce
When you are trying to sell a product online you will need this facility to change product and pricing, as well as ecommerce to facilitate purchases.