Question: Describe the difference between a primary key and a foreign key. How many primary keys and foreign keys can one table have? Are there any

Describe the difference between a primary key and a foreign key. How many primary keys and foreign keys can one table have? Are there any drawbacks of having many keys?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Programming Questions!

Which of the following statements is TRUE? A table may have ______ Select one: a. many primary keys and many foreign keys b. one primary key and many foreign keys c. many primary keys and one foreign...

Please answer the following SQL questions using the information given below: 1. How many sailors have rented the boat owned by Andy? 2. List the reservation date on which each boat had the shortest...

Please answer the following SQL questions using the information given below: 1. Identify how many reservations are made by each sailor at the Sailors Club? Indicate the name of the sailor. 2. Who...

Please answer the following SQL questions using the information given below: 1. List the boat names reserved for October 1998. 2. What is the name and color of the boat reserved by Dustin on...

Please answer the following SQL questions using the information given below: 1. What is the average rating of sailors? 2. List the names, the date of birth of sailors whose rating is below the...

Please answer the following SQL questions using the information given below: 1. What is the name and the color of the boat with the least value? 2. Provide the information on the number of...

CIT 170 Database Project After reading through this entire document, please watch the video on Project Design Hints. The video has additional information to assist you with your design phase. You are...

Create an EER diagram using MySQL Workbench (Crow's Foot Notation) to support the described business scenario and its operations. After, translate the diagram into a DB schema consisting of tables...

War W30 Three tables Employee, Store and Region are given in Figure P3.1. Please go through these tables and answer the following questions. (Hint: Each store employs many employees, one of whom...

SECTION A: Answer ALL (30 marks) QUESTION 1 Rajesh owns a car rental shop. To maintain the rental records in a systematic way, Rajesh assigns a unique ID to each of his customers. He allows each...

Describe the process to partition the hard disk into three to support windows, Linux, and MAC operating systems. What are the roles of virtual machines if a system already installed with an operating...

Show that the only eigenvalue of a nilpotent matrix is zero.

7-3 Break-even revenue for a multiple-product firm can a. be calculated by dividing total fixed cost by the overall contribution margin ratio. b. be calculated by dividing segment fixed cost by the...

A newsgroup is interested in constructing a 95 confidence interval for the proportion of all Americans who are in favor of a new Green initiative Of the 584 randomly selected Americans surveyed 357...