A manufacturing company produces products. The following product information is stored: product name, product ID and quantity on hand. These products are made up of many components. One or more suppliers can supply each component. The following component information is kept: component ID, name, description, suppliers who supply them, and products in which they are used. Create an ERD to show how you would track this information. Show entity names, primary keys, attributes for each entity, relationships between the entities and cardinality. Assumptions: A supplier can exist without providing components. A component does not have to be associated with a supplier. A component does not have to be associated with a product. Not all components are used in products. A product cannot exist without components.
A manufacturing company produces products. The following product information is stored: product name, product ID and quantity on hand. These products are made up of many components. One or more suppliers can supply each component. The following component information is kept: component ID, name, description, suppliers who supply them, and products in which they are used. Create an ERD to show how you would track this information. Show entity names, primary keys, attributes for each entity, relationships between the entities and cardinality. Assumptions: A supplier can exist without providing components. A component does not have to be associated with a supplier. A component does not have to be associated with a product. Not all components are used in products. A product cannot exist without components.
Chapter2: Database Design Fundamentals
Section: Chapter Questions
Problem 3TD
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A manufacturing company produces products. The following product information is stored: product name, product ID and quantity on hand. These products are made up of many components. One or more suppliers can supply each component. The following component information is kept: component ID, name, description, suppliers who supply them, and products in which they are used.
Create an ERD to show how you would track this information. Show entity names, primary keys, attributes for each entity, relationships between the entities and cardinality.
Assumptions:
- A supplier can exist without providing components.
- A component does not have to be associated with a supplier.
- A component does not have to be associated with a product. Not all components are used in products.
- A product cannot exist without components.
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