Question: Following is the database schema: Following is the query 1 and query 2: Q1. Write query 1 and query 2 in relational calculus using


Following is the database schema:

Screenshot 2023-01-30 at 4.39.34 PM.png

 

Following is the query 1 and query 2:

Screenshot 2023-01-30 at 4.39.52 PM.png


Q1. Write query 1 and query 2 in relational calculus using universal quantification.

Q2. Write query 1 and query 2 in relational calculus using only essential quantification.

Q3. Write query 1 and query 2 in SQL query that uses only NOT EXISTS on nested queries.
 
 

frequents drinker bar serves bar beer price likes drinker beer

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