Consider the following relations in a Hotel database. Hotel (HotelNo, HotelName, Address, Capacity) Booking (CustomerNo, HotelNo, Date, NumberOfGuests). HotelNo is the primary key of the Hotel relation. Assume that (1) a customer can book the same hotel on different dates; (2) a customer can book multiple hotels on each date; (3) a hotel can be booked by multiple customers on each date. What is the most suitable primary key for the Booking relation? Justify your answer. Write the SQL statement to define an assertion BookLimit that ensures "each customer cannot book more than 3 hotels on each (1) (2) date". (3) Write the SQL statement to define an assertion CapacityLimit that ensures "the total number of guests booked for each hotel on each date cannot exceed the hotel capacity".

Consider the following relations in a Hotel database. Hotel (HotelNo, HotelName, Address, Capacity) Booking (CustomerNo, HotelNo, Date, NumberOfGuests). HotelNo is the primary key of the Hotel relation. Assume that (1) a customer can book the same hotel on different dates; (2) a customer can book multiple hotels on each date; (3) a hotel can be booked by multiple customers on each date. What is the most suitable primary key for the Booking relation? Justify your answer. Write the SQL statement to define an assertion BookLimit that ensures "each customer cannot book more than 3 hotels on each (1) (2) date". (3) Write the SQL statement to define an assertion CapacityLimit that ensures "the total number of guests booked for each hotel on each date cannot exceed the hotel capacity".

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter1: Overview Of Database Concepts

Section: Chapter Questions

Problem 5HOA: Access path A database table is composed of records and fields hold data. Data is stored in records....

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What is a relation?
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Question 1 A city college would like to maintain their academic information in a MySql database system. The following are the interested information: Courses: Catalog # (CIT 170 for instance) Credit Hours; Name of the Course (Database Design Fundamentals for instance) Course Descriptions Prerequisite Components (Lecture, or Laboratory for instance) Classes: Class # Class Name (usually the course name, M 170 for instance) Start Date End Date Meeting time (9:30 am ~ 12:15 pm, for instance) Days in a week (Monday) Term (Spring 2018, for instance) Location (TIE Building for instance) Room (UB 301, for instance) Instructor Online status (online, or in-person) Faculty: Employee Id (001880301, for instance) First Name Last Name Title (professor, for instance) Email Phone Office Location (TIE building, for instance) Room (UB303, for instance) Student: Student ID First Name Last Name Plan Sub Plan Advisor Current GPA Grade of each course The Term you got the grade for a course. The…
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