In a conceptual model seem like each entity always correspond to one table in database. Is it possible to have three tables in database and not the same number of entities in conceptual model?
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In a conceptual model seem like each entity always correspond to one table in database. Is it possible to have three tables in database and not the same number of entities in conceptual model?
Yes; Consider:
Each person can have one or more Names, and each Name can belong to one or more Persons.
Entity Framework can take care of the Many-To-Many table and do:
Additionally, when using Inheritance there is no need for the base table/entity so it gets rolled up into the derived table/entity.