Consider the following database schema: LIKE(person, sport), PRACTICE(person, sport), where person and sport are keys in both tables. The table LIKE gives the sports a person likes, the table PRACTICE gives the sports a person practices. We assume that a person likes at least one sport and practices at least one sport. We assume also that a person does not like a sport if the sport is not listed among the sports that person likes
Express the following queries in Calculus 1. List the sports that John likes 2. Among the sports that John practices, which ones does he like? 3. Which sports John does not like 4. List the people who practice at least one sport John likes 5. List the people who practice at list one sport they like
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