A View is one of the possible ways to query the MDM Hub. When you create Views in Talend Studio, you specify:
What business entities are viewable/searchable for an authorized business user,
What elements a business user can view/search in the business entities.
What elements of the business entities can be returned by the query.
What content can be returned by the query. The data can be filtered on its content before being delivered by the View (for example, all companies which have their Head Office in France).