Structured documents allow you to separate content (data) and design. It also enables content re-use on other site sections or on other web sites in different design.
Custom document types and fields, content/design separation
You can define custom types of documents stored in Kentico CMS repository. For example, you can define a "computer" document type with custom fields describing various product parameters, such as CPU type, RAM size, HDD size, etc.:

Then the editors can enter content in a structured form:

It allows you to display the computer information in several ways (catalog preview, short description, full technical details, etc.) and to keep data in a standard database structure with typed values.

Each document type has its own relational database table:
