Consider the database schema below for hotels in countries. A country have many hotels, and the same hotel chain (name) are available in different countries. Country (ID: integer, Name: String (unique)) Hotel (CountryID: Integer, HotelName: String, ManagerID: Integer) How many candidate Key(s) in the hotel relation?

Consider the database schema below for hotels in countries. A country have many hotels, and the same hotel chain (name) are available in different countries. Country (ID: integer, Name: String (unique)) Hotel (CountryID: Integer, HotelName: String, ManagerID: Integer) How many candidate Key(s) in the hotel relation?

Database Systems: Design, Implementation, & Management

11th Edition

ISBN:9781285196145

Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel

Publisher:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel

Chapter10: Transaction Management And Concurrency Control

Section: Chapter Questions

Problem 1P

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QUESTION 2

Consider the database schema below for hotels in countries. A country have many hotels, and the same hotel chain (name) are available in different countries.

Country (ID: integer, Name: String (unique))

Hotel (CountryID: Integer, HotelName: String, ManagerID: Integer)

How many candidate Key(s) in the hotel relation?

Organized collection of structured information, or data, typically stored in a computer system.

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QUESTION 14 Consider the database schema below for cities in countries. A country have many cities, and the same city name can be found in different countries. Country (ID: integer, Name: String (unique), SN: serialNumber (int)(unique)) City (serialNo: integer (unique, not null), CountryID: Integer, CityName: String, Population: integer) The same country (ID , name) can be added twice in Country relation with different SN? No, violates entity Integrity constraint No, violates referential integrity constraint. No, violates key constraint. Yes. No, violates domain constraints.
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