Question 2: Relational Model / Relational Algebra Consider the following schema, Sailors(sid: integer, sname: string, rating: integer, age: real); Boats(bid: integer, bname: string, color: string); Reserves(sid: integer, bid: integer, day: date). Symbols you may need: n --U -- ở -- TI -- A -P You use anything that we covered in the slides. 1. Find the names of sailors who reserved a blue boat, have rating at least 8 and older than 40. 2. Find the names of sailors who reserved only blue boats. 3. Find the names of sailors who reserved at least two boats. (Similar to our example of "Find the students who earned at least two As")
Question 2: Relational Model / Relational Algebra Consider the following schema, Sailors(sid: integer, sname: string, rating: integer, age: real); Boats(bid: integer, bname: string, color: string); Reserves(sid: integer, bid: integer, day: date). Symbols you may need: n --U -- ở -- TI -- A -P You use anything that we covered in the slides. 1. Find the names of sailors who reserved a blue boat, have rating at least 8 and older than 40. 2. Find the names of sailors who reserved only blue boats. 3. Find the names of sailors who reserved at least two boats. (Similar to our example of "Find the students who earned at least two As")
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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