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From ER Models to Dimensional Models:

How do you convert an ER model to a dimensional model?
Open an entity relationship model and select Model Properties from the Model menu.
The Model Editor opens.
On the General tab, in the Modeling Features section, select Is Dimensional and click OK.
The entity relationship model is converted to a dimensional model.
What is the difference between ERD and dimensional model?
The primary difference between dimensional data models (DDMs) and entity-relationship diagrams (ERDs) is the pattern.
A DDM organizes the relationships into a pattern around the central fact table.
This pattern is called a star schema.
An ERD doesn't have this elemental pattern.
How do you create a dimensional model?
Designing a Dimensional Data Model
1Step 1: Identify the Business Processes.
2) Step 2: Identify Facts and Dimensions in Your Dimensional Data Model.
3) Step 3: Identify the Attributes for Dimensions.
4) Step 4: Define the Granularity for Business Facts.
5) Step 5: Storing Historical Information (Slowly Changing Dimensions)
The conceptual Entity-Relationship (ER) model is extensively used for database design in relational database environment, which is used on day-to - day operations.
Multidimensional (MD) data modeling is crucial in data warehouse design as it is targeted for managerial decision support.

Deriving dimensional models from ER models also provides a more structured approach to dimensional design than starting from first principles. There is a large conceptual “leap” in getting from end-user analysis requirements to dimen- sional models, with which all but the most gifted designers have difficulty.

From ER Models to Dimensional Models:

How do you convert an ER model to a dimensional model?

What is the difference between ERD and dimensional model?

How do you create a dimensional model?

Designing a Dimensional Data Model