Project views use several different display formats. Project uses three types of views: task views, resource views, and assignment views. It is important to understand the difference between these properties. Project provides different types of views that present project information by using different formats and components, such as tables, filters, groups, and details. Understand the types, formats, and components of Project views For example, the task duration that you enter in the chart portion of the Gantt Chart view also appears in the Task Sheet view.
That subset of information is stored in Project and is displayed in any view that calls for it. Views display, in a particular format, a subset of the information that you enter in Microsoft Project.