Given a Customer entity class with a CustomerId property for its primary key, which of the following defines a foreign key property if it’s coded in another entity class named Invoice? 1. public int CustomerId { get; set; } 2. public int InvoiceId { get; set; } 3. public Invoice Invoice { get; set; } 4. public Customer Customer { get; set; }
Given a Customer entity class with a CustomerId property for its primary key, which of the following defines a foreign key property if it’s coded in another entity class named Invoice? 1. public int CustomerId { get; set; } 2. public int InvoiceId { get; set; } 3. public Invoice Invoice { get; set; } 4. public Customer Customer { get; set; }
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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Given a Customer entity class with a CustomerId property for its primary key, which of the following defines a foreign key property if it’s coded in another entity class named Invoice?
1. public int CustomerId { get; set; }
2. public int InvoiceId { get; set; }
3. public Invoice Invoice { get; set; }
4. public Customer Customer { get; set; }
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