Which command in dbt is primarily used for running models?

The command primarily used for running models in dbt is indeed "dbt run." When you utilize this command, dbt compiles your model files into raw SQL statements that can be executed against your database. It then runs these statements in the appropriate order based on dependencies among models, ensuring that everything needed for each model to operate has been successfully created. This command is fundamental in the dbt workflow, as it moves the transformation logic you’ve defined in your models into actual tables or views in your data warehouse, effectively materializing your analytics definitions into usable data structures.

The other options are used for different purposes. "dbt build" focuses on building the entire dbt project, including running models but also compiling and running tests and generating documentation. "dbt execute" is not a standard dbt command, and "dbt start" isn’t a part of the dbt command vocabulary either. Thus, these choices do not fulfill the specific function of executing models in the same way that "dbt run" does.