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Identify the primary key and foreign keys in the following relational schema.|| Write your answer below. Select the PK from existing attributes. If there is
Identify the primary key and foreign keys in the following relational schema.|| Write your answer below. Select the PK from existing attributes. If there is no FK in a table, state "None"): (b) Company (company ID. company name, address, CEOName) Company Annual Revenue History (company ID year, planned revenue, actual revenue) Sale (sale ID, sale amount, sale date, company ID) Company: PK: FK: Company Annual Revenue History: PK: FK: Sale: PK: FK
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