A data model is an abstract model that represents data organized in entities, with relationships between these entities defined. Each entity has its own attributes.
Data Models List
When you create a report, you create it on the basis of a data model that you select. On the File tab, the New page displays a list of data models from which you may choose.
To the right is a tab with information about permissions and properties of the selected data model.
When you click a data model in the list, a new, blank report appears on the Design tab, with the data entities displayed in the Entity Tree. You can explore the data model by expanding nodes in the tree, and selecting entities to display their attributes below in the Attribute Tree.
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