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2- Cardinality ratios often dictate the detailed design of a database. The cardinality ratio depends on the real- world meaning of the entity types involved and is defined by the specific application. For the binary relationships below, suggest cardinality ratios based on the common sense meaning of the entity types. Clearly state any assumptions you make. (20 points) Cardinality Entity 1 Ratio Entity 2 1-many A student may have more than one social security card (legally with the same social security 1. Student unique card social security number) and every social security number belongs to a unique student 2. Student Teacher 3. Class Room Wall 2. Student Teacher 3. Classroom Wall 4. Country Current President 5. Course TextBook Item (that can be 6. Order found in an order) 7. Student Class 8. Class Instructor 9. Instructor Office E-bay 10. Auction E-bay bid item