What does giving primacy to a certain entity cause in a conceptual model for cataloging? Expression-entity dominant model revisited

Which entity is given primacy in a conceptual model for cataloging is an important issue in metadata interoperability. This study investigates the implications and consequences of giving primacy to different entities among models and the merit of the expression-entity dominant model. FRBR and four other models derived from FRBR that give primacy to different entities are examined. Several modeling issues, such as optionality or necessity of establishing entity instances, cardinality between entities, and treatment of titles and statements of responsibility that appear in a resource, are examined for each model and the results are compared.