17| DBMS |Relational Calculus | Tuple Relational Calculus| Sailors & Company database queries in TRC

Relational Calculus Queries: Sailor’s Database Sailors (sid, sname, rating, age) ----- sid is PK Reserves (sid, bid, day) ----- sid is FK, bid is FK Boats (bid, bname, color) ---- bid is PK 1) Find all the sailors with a rating above 7? 2) Find the names of the sailors with a rating above 7? 3) Find the names of the sailors who have reserved boat 103? 4) Find the names of sailors who have reserved red boat? 5) Find the colors of boats reserved by INS? 6) Find the names of sailors who have reserved at least one boat? 7) Find the names of sailors who have reserved red or green boat? 8) Find the names of the sailors who have reserved red and green boat? 9) Find the names of sailors who have at least two boats? 10) Find the Sid’s of sailors with age over 20 and who have not reserved a red boat? 11) Find the names of sailors who reserved all boats? 12) Find the names of sailors who have reserved all boats called Navy? Company Database: 1) Retrieve the employees who are working in department number 5? 2) Retrieve the FN, LN of the employees who are working in department number 5? 3) Retrieve the dependent names of the employee number 532? 4) Retrieve the dependent names of the employees who are working in research department? 5) Retrieve the dependent names of the employees whose first name is sehwag? 6) For every project located in kadapa, list the project number, the controlling department number and the department manager number? 7) Find the names of the employees who work on some projects controlled by department number 5? 8) Find the names of the employees who work on all the projects controlled by department number 5? 9) Retrieve the names of the employees who have no dependents? 10) List the names of the employees who have at least one dependent? Discover the power of tuple relational calculus (TRC) in database management systems (DBMS) with a focus on Sailors and Company databases. This video explores the theoretical foundations and practical applications of TRC, specifically addressing queries within the context of relational databases. 🔍 What You'll Learn: Fundamentals of relational calculus and tuple relational calculus Solving database queries using tuple relational calculus Application of TRC principles to Sailors and Company database scenarios Comparisons between TRC and SQL for query formulation 📚 Why This Video Matters: Tuple relational calculus provides a declarative approach to querying databases, complementing SQL and enhancing your understanding of database theory. Whether you're a student or a professional, mastering TRC can streamline your query-writing process and deepen your DBMS knowledge. 💡 Who Should Watch: Students studying database management systems (DBMS) and relational calculus Database professionals and enthusiasts seeking to expand their query language skills Anyone interested in understanding the theoretical underpinnings of database queries 👍 Don't Forget to Like, Subscribe, and Share! If you found this video informative, please give it a thumbs up, subscribe to our channel for more DBMS and database content, and share it with your peers!