What is a primary key? Are duplicate primary keys allowed? Why or why not?

Question:

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Systems analysis and design in a changing world

ISBN: 978-1423902287

5th edition

Authors: John W. Satzinger, Robert B. Jackson, Stephen D. Burd

See More Books

Question Posted: Dec 27, 2012 05:10 AM

See More Questions

What is a primary dealer, and why are they important?
What is a primary key? What is the primary key for each table in the Henry Books database shown in Chapter 1?
What is a primary key? What is the primary key for each table in the Colonial Adventure Tours database shown in Figures 1-15 through 1-19 in Chapter 1? Figure 1-15 GuideNum LastName FirstName Address...
What favors the formation of continuous (dense) cleavage?
The Rule of 78's is a computing used method of computing the amount of interest when the balance of a is repaid in advance. Adding the numbers representing 12 months gives 1 + 2 + 3 + 4 + 5 + . . . +...
Consider a sample with data values of 53, 55, 70, 58, 64, 57, 53, 69, 57, 68, and 53. Compute the mean, median, and mode. Applications
What are the five costs associated with inventories? LO.1
Below are transactions for Hurricane Company during 2015. a. On October 1, 2015, Hurricane lends $10,000 to another company. The other company signs a note indicating principal and 8% interest will...
Patrick Corporationis authorized to be 100.000 shares of Star vakin common fork. Durin 2016, the company has the following stock tractions Jan. 15 Sents Deco saud 700.000 shares of stock at 57 pts...
The Precision Machining Company makes hand-held tools on an assembly line that produces one product every minute. On one of the products, the critical quality dimension is the diameter (measured in...
With respect to relational databases, briefly define the terms row and field.
What is the difference between a natural key and an invented key? Which type is most commonly used in business information processing?
Compute the cost of inventory under the perpetual inventory sys tem, using the following costing methods: first-in, first-out; last-in, first-out; and average cost. AppendixLO1
When CH4(g) reacts with O2(g) to form CO2(g) and H2O(g), 192 kcal of energy are evolved for each mole of CH4(g) that reacts. Write a balanced equation for the reaction with an energy term in kcal as...
Ben Rogers, Judy Wilkinson, and Henry Walker were the partnership dentists. Ben Rogers became insolvent because of real estate investments. So, Judy Wilkinson and Henry Walker had to then pay the...
A random sample of 10 subjects have weights with a standard deviation of 10.8148 kg. What is the variance of their weights? Be sure to include the appropriate units with the result.
of stion 1. Harmonic Test II. Root Test III. Ratio Test Consider the series 8 = 72 Which one of the following tests can be used to determine whether it is convergent or divergent? IV. Integral Test...
Pharaoh company obtains $44,800 in cash by signing a 7%, 6 month, $44,800 note payable to First Bank on July 1. Pharoah's fiscal year ends on September 30. What information should be reported for the...
Get together in a small group to present evidence that being effective at resolving conflict is still a major problem in business and society.
Write a while loop that uses an explicit iterator to accomplish the same thing as Exercise 7.3. Exercise 7.3. Write a for-each loop that calls the addInterest method on each BankAccount object in a...
Describe a procedure for finding the inverse of a square matrix.
Why is document analysis useful? What insights into the organization can it provide?
Outline suggestions to make observation a useful, reliable requirements elicitation technique.
Describe a strategy for using the various requirements elicitation techniques in a project.
Green Lawn Company sells garden supplies. Management is planning its cash needs for the second quarter. The following information has been assembled to assist in preparing a cash budget for the...
eBook Question Content Area Comparison of Methods of Allocation Duweynie Pottery, Inc., is divided into two operating divisions: Pottery and Retail. The company allocates Power and General Factory...
TYBALT CONSTRUCTION Income Statement For Year Ended December 31 TYBALT CONSTRUCTION Income Statement For Year Ended December 31

What is a primary key? Are duplicate primary keys allowed? Why or why not?

Question:

Step by Step Answer:

1 Primary key is an unique key which is used to identify or fetch record uniquely from a relation or ...View the full answer

Systems analysis and design in a changing world

Students also viewed these Computer Sciences questions