Techniques are described for automatically generating a reporting model based on a relational database storing multidimensional data in accordance with a relational database schema. A model generator may, for example, produce a base reporting model from the database schema, and subsequently generate a user reporting model by importing the base reporting model. The model generator updates the user reporting model in response to modifications requested by a user, and maintains an activity log to record the modifications. The model generator regenerates the base reporting model and the user reporting model in the event the database schema changes, and reapplies the modifications from the activity log to the user reporting model to automatically update the user reporting model. The database schema may be a relational star schema as described herein.