What is the purpose of a subtype discriminator?

Question:

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

Step by Step Answer:

Related Book For book-img-for-question

Essentials of Database Management

ISBN: 978-0133405682

1st edition

Authors: Jeffrey A. Hoffer, Heikki Topi, Ramesh Venkataraman

See More Books

Question Posted: Feb 13, 2019 11:52 AM

See More Questions

What is a subtype discriminator? Given an example of its use.
Add a subtype discriminator for each of the supertypes shown in Figure 3-10. Show the discriminator values that assign instances to each subtype. Use the following subtype discriminator names and...
Add a subtype discriminator (named Person Type) to the diagram you created in Problem and Exercise 2-29.
QUESTION-3 (20 PTS): 3. What is a bond? Explain the relationship between bond interest rates and bond yields. Also briefly list the important parameters (variables) in a bond issuance/transaction?
Annual sales at a small pharmaceutical firm have been rather stagnant over the most recent five-year period, exhibiting only 1.2% growth over this time frame. A research analyst prepares the...
You are considering investing $1,000 at an interest rate of 6.5% compounded annually for five years or investing the $1,000 at 6.8% per year simple interest for five years. Which option is better?
Discuss how you should handle the variables with p-values around 0.05, 0.10, or 0.15.
According to the case above, advise Mr. Doolittle as to whether the expenses incurred in the United Kingdom would be deductible for income tax purposes? You are a chartered tax accountant working in...
Exercise 14-26 Direct Materials and Direct Labor Variances [LO 14-3] Assume that Schmidt Machinery Company had the standard costs reflected in Exhibit 14.5. In a given month, the company used 3,525...
Given an array, A, of n 2 unique integers in the range from 1 to n, describe an O(n)-time method for finding the two integers in the range from 1 to n that are not in A. You may use only O(1) space...
Add a subtype discriminator (named Person Type) to the diagram you created in Problem and Exercise 9. Data from Exercise 9. Draw an EER diagram for the following problem using this texts EER...
What types of business rules are normally captured in an EER diagram?
Name the type of fault rock shown in Fig. G-52a, and explain what features you used to identify it. The protolith of this rock was a coarse-grained granite. The irregularly shaped, light-colored...
Juanita Poblamo makes large ceramic pots for use in outdoor landscape. She currently has two models, one square and the other round. Because of the size of Juanitas creations, only one pot can be...
EPI educational products are currently sold without any supplemental materials. The company is considering the inclusion of instructional materials such as an overhead slide presentation, potential...
EPI is considering eliminating a product from its ToddleTown Tours collection. This collection is aimed at children one to three years of age and includes tours of a hypothetical town. Two products,...
Suppose we estimate the model y i = + u i , where u i N [ 0 , i 2 ] . (a) Show that the OLS estimator of simplifies to ^ = y . (b) Hence directly obtain the variance of y . Show that this...
This question presumes access to software that allows NLS and ML estimation. Consider the gamma regression model of Exercise 5-2. An appropriate gamma variate can be generated using \(y=-\lambda \ln...
As mentioned in Exercise C-5.8, postfix notation is an unambiguous way of writing an arithmetic expression without parentheses. It is defined so that if (exp 1 ) (exp 2 ) is a normal (infix) fully...
The baseball player A hits the ball from a height of 3.36 ft with an initial velocity of 34.8 ft/s. 0.14 seconds after the ball is hit, player B who is standing 15 ft away from home plate begins to...
Give an implementation of the deque ADT using an array list for storage.
Implement a method with signature concatenate(LinkedQueue Q2) for the LinkedQueue class that takes all elements of Q2 and appends them to the end of the original queue. The operation should run in...
Implement the clone( ) method for the ArrayStack class. (See Section 3.6 for a discussion of cloning data structures.)
There is a credit rating agency for businesses that gives out various amounts of information based on the subscription level. This company is called a. Business Credit Scoring b. Fair Issue c. Dun...
Current Attempt in Progress On July 3 1 , 2 0 2 2 , Crane Compary had a cash balance per books of $ 6 , 2 4 5 . 0 0 . The statement from Dakata State Bark on that date showed a balance of $ 7 , 7 9 5...
Cede & Co. expects its EBIT to be $89,000 every year forever. The firm can borrow at 5 percent. Cede currently has no debt, and its cost of equity is 10 percent. If the tax rate is 35 percent, what...

What is the purpose of a subtype discriminator?

Question:

Step by Step Answer:

The purpose of a subtyp...View the full answer

Essentials of Database Management

Students also viewed these Computer science questions