Question: Context: Databases ** Which of the following statements is correct? In the E/R-style method, we normally create more relations than the OO or nulls methods.

Context: Databases ** Which of the following statements is correct? In the Context: Databases

** Which of the following statements is correct? In the E/R-style method, we normally create more relations than the OO or nulls methods. Taking the OO method, we create a class for all entity sets, even those that have no attributes. Taking the nulls approach, we create a relation for an entity set that has no attributes. Taking the E/R-style method to convert an isa hierarchy, we create a relation for an entity set that has no attributes. Copy

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 Databases Questions!

As a member of Analysts Incorporated consulting firm, you have carefully collected data on a manufacturing firm's output, capital and labor. The data are in the spreadsheet below. You believe the...

Question 1 Morality is Select one: A. Universal and basic to human relationships. B. Established by the common law. C. The system that protects property and people. D. The application of ethics to...

s1 educated (SSE) student for every three public school educated (PSE) students. Reasoning that students are not very dissimilar from threads, he suggests the following entry and exit routines be...

Briefly describe ASCII and Unicode and draw attention to any relationship between them. [3 marks] (b) Briefly explain what a Reader is in the context of reading characters from data. [3 marks] A...

Chapter 2: What are the Major Types of Social Research? Copyright 2011 by Pearson Education, Inc. All rights reserved. Use and Audience of Research Basic vs Applied Research: Basic research - type of...

National Business Institute of Australia 20 Clark Rd. Ivanhoe Victoria 3079 www.nbi.com.au 03 9499 7872 FNSORG601A Negotiate to achieve goals and manage disputes Student Workbook melbourne . sydney ....

(a) In SystemVerilog, what is the difference between: (i) The ternary operator ? and if...then...else statements? [2 marks] (ii) always_ff and always_comb? [2 marks] (iii) Blocking, non-blocking and...

I need help with following questions from the homework. I have attached the chapters so please see the attached files to answer the following questions specifically. Ch 4 (p 176 of text or p 34 of...

TANGLEWOOD CASEBOOK for use with STAFFING ORGANIZATIONS 5th Ed. Kammeyer-Mueller 1 TANGLEWOOD CASEBOOK To accompany Staffing Organizations, fifth edition, 2006. Prepared by John Kammeyer-Mueller...

) Explain the collision detection mechanism applied in standard wired medium access control associated with CSMA and indicate why this might be unsuitable for wireless networks. [2 marks] (ii)...

) Consider integer division of one two's-complement binary number by another. Programming languages may vary in the result when one argument is negative. What differing conventions might they be...

The following transactions occurred during the month of November in the operation of Carols Cutsie Cosmetics, Inc, a wholesaler who sells to retail stores. Record each transaction listed below to...

Griffin Shoe Company records Sales Returns and Allowances, Sales Discounts, and Credit Card Discounts as contra-revenues. July 12 Sold merchandise to customer at factory store who charged the $300...

Which of the following is the best example of a well - stated financial objective? Multiple Choice Maximize total company profits and return on investment. Boost revenues by a percentage margin...

Bill Clinton reportedly was paid an advance of $10.0 million to write his book My Life. Suppose the book took three years to write. In the time he spent writing, Clinton could have been paid to make...

KEY QUESTION Use a demand and supply model to explain the impact of occupational segregation or crowding on the relative wage rates and earnings of men and women. Who gains and who loses from the...

Current affirmative action programs are based on the belief that to overcome discrimination, we must practice discrimination. That perverse logic has created a system that undermines the fundamental...

KEY QUESTION Assume that Al, Beth, Carol, David, and Ed receive incomes of $500, $250, $125, $75, and $50, respectively. Construct and interpret a Lorenz curve for this five-person economy. What...