Final answer:
Sitecore defines a type of item (data schema) using templates, which are blueprints that define the structure and properties of an item. Each template can have fields with their own data types.
Step-by-step explanation:
Sitecore defines a type of item (data schema) using a concept called templates. Templates in Sitecore are like blueprints for creating items, and they define the structure and properties of an item. Each template can have fields, which represent the data that can be stored in the item, and each field has a data type.
For example, if you have a template for a blog post, it might have fields for the title, author, and content. Each field can have its own data type, such as single-line text, rich text, or image.
By defining templates and their fields, Sitecore ensures that the items created in the system follow a consistent structure and have the necessary properties.