Question: According to the data model, is it required that every entity instance in the PRODUCT table be associated with an entity instance in the CD

According to the data model, is it required that every entity instance in the PRODUCT table be associated with an entity instance in the CD table? Why or why not?

Step by Step Solution

★★★★★

3.46 Rating (166 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

No The completeness constraint for the data model s... View full answer

Question Has Been Solved by an Expert!

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

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

358-CS-DB (609).docx

120 KBs Word File

Students Have Also Explored These Related Databases Questions!

(a) Current density is ultimately determined by conservation of charge. If we define n=4*4 then show using the Schrodinger equation that the current density operator y.ddv.) dr dr J satisfies the...

According to the data in Figure 15.4, by what percent did world GDP per capita grow from 1. 1000 to 1500? 2. 1500 to 1820? 3. 1820 to 1995? Figure 15.4 $8,000 5,000 4,000 - 3,000 - 2,000 1,000 Growth...

List all of the attributes of a movie. According to the data model, is it required that every entity instance in the PRODUCT table be associated with an entity instance in the CD table? Why, or why...

Need help to get the answers of these two question shown in picture. I found answer of these two questions on chegg but both says different answers. One says yes and other says. Please i need final...

Database: For question #1-3 refer to the given Figure PRODUCT PK Prod Num Prod Title Prod_ReleaseDate Prod Price Prod Type d Prod_Type BOOK CD MOVIE PK,FK1 Prod Num PK,FK1 Prod Num PK,FK1 Prod Num...

What is an entity supertype, and why is it used? What kinds of data would you store in an entity subtype? What is a specialization hierarchy? What is a subtype discriminator? Given an example of its...

According to the data model, is it required that every entity instance in the PRODUCT table be associated with an entity instance in the CD table? Why, or why not? FIGURE Q 5 . 8 THE PRODUCT DATA...

According to the data model, is it required that every entity instance in the PRODUCT table be associated with an entity instance in the CD table? Why, or why not?

(a) Derive eqs. (10.23) and (10.24) from eqs. (10.18) and (10.20). (b) Using eq. (10.29) in conjunction with Maxwell's equations, show that (c) From part (b), derive eqs. (10.32) and(10.33). jwu

What are the differences between confidentiality and attorney-client privilege?

Which of the following statements is true of the worksheet the worksheet is a financial statement issued to the public to communicate the financial results of a company the worksheet is a tool that...

Six - 6 (Proprietorship - Business Income With CCA) Cody Jewel is an accountant who has not incorporated his professional practice. The practice has a December 31 year end. Cody operates his practice...

Write a query to display the starting salary for each employee. The starting salary would be the entry in the salary history with the oldest salary start date for each employee. Sort the output by...

Write a query to display the current salary for each employee in department 300. Assume that only current employees are kept in the system, and therefore the most current salary for each employee is...

Write a query to display the manager name, department name, department phone number, employee name, customer name, invoice date, and invoice total for the department manager of the employee who made...

user engagement and satisfaction

Problem #9 (Kozak Problem 8.2.6) In 2008, there were 507 children in Arizona out of 32,601 who were diagnosed with Autism Spectrum Disorder (ASD) ("Autism and developmental," 2008). Find the...

The balance sheet and income statement shown below are for Gibson Inc. Note that the firm has no amortization charges, it does not lease any assets, none of its debt must be retired during the next 5...