Question: 2.1 In designing a database, what is the referential integrity rule? (a) The primary key in a table should not be null. (b) The foreign

2.1 In designing a database, what is the referential integrity rule?

(a) The primary key in a table should not be null.

(b) The foreign key in a table should not be null.

(c) Each table must have a primary key and a foreign key.

(d) Two of the above are correct.

(e) None of the above is correct.

Step by Step Solution

★★★★★

3.38 Rating (151 Votes )

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 Accounting Financial Analysis Questions!

Q:

Which of the following correctly .2 * ?describes the Referential Integrity Rule (1.5 ) The primary key of a table must .have data values (cannot be null) Values of a specific attribute must be of the...

Q:

Referential integrity rule means that Foreign key can never be null Foreign key may or may not be null Primary key can never be null A foreign key which identifies primary key of some table T must...

Q:

What is referential integrity rule? Multiple Choice Primary keys cannot be null. Foreign keys cannot be null. The data values of a foreign key may not exist in the corresponding table. Foreign keys...

Q:

What is referential integrity rule? Multiple Choice Primary keys cannot be null. Foreign keys cannot be null. The data values of a forging key always exist in the corresponding table. Foreign keys...

Q:

Add referential integrity between: a. Department table and Employee table, add foreign key constraint in the Employee table. b. Employee table and Dependent table, add foreign key constraint in the...

Q:

Relational Model Choose the option that correctly answer the question. ( 5 Points ) Which of the following sentences is TRUE? ( 2 Pnts ) a . The proper use of foreign keys is crucial to exercising...

Q:

The Review Questions 7.3 to 7.40, from the Kroenke book starting page 357, have been duplicated below, to assist in the completion of this Lab Assignment. RQ Questions 7.1, 7.2 and 7.3 are answered...

Q:

10 points Which of the following statements about primary keys, foreign keys, and the referential integrity rule is true? The referential integrity rule applies only to relational databases A...

Q:

Base answer on picture below Lastly, Create the ERD to show the relationship between STORE and REGION Table name: EMPLOYEE + + + EMP_CODE EMP_TITLE + Mr. + 2 Ms. 3 Ms. 4 Mrs. + 5 Mr. 6 Mr. + 7 Mr. +...

Q:

MULTIPLE CHOICE QUESTIONS 1. Nulls, if used improperly, can create problems because they can represent ____. a. a default value b. a known, but missing, attribute value c. zero d. an unsortable value...

Q:

The gain or loss on the sale of a plant asset is determined by comparing: A. book value and residual value. B. sale value and residual value. C. sale value and book value. D. sale value and original...

Q:

The electric field at a distance of 0.145 m from the surface of a solid insulating sphere with radius 0.355 m is 1750 N/C. (a) Assuming the sphere's charge is uniformly distributed, what is the...

Q:

Martha and Lew are married taxpayers with $ 1 , 0 0 0 of foreign tax withholding from dividends in a mutuat fund. They have enough forelgn lincome from the mutual fund to edsim the fal $ 1 , 0 0 0 as...

Q:

You want to test whether an estimated j coefficient in an OLS regression model is significant. What is the null hypothesis? What is the statistical test of this hypothesis? What values of the...

Q:

How is a budget used to evaluate actual financial performance?

Q:

There are two budget problems to complete. The first is to calculate amounts to use in budgeting based on actual information and formulas. The second is to prepare an annual budget based on that...

Q:

Prepare the annual operating expense budget for the next year using the formulas from problem #1 and the following assumptions: Remember there are 13 accounting periods in a fiscal year, each with...

Q:

Waterway Company's income statement contained the following condensed information. WATERWAY COMPANY Income Statement For the Year Ended December 31, 2022 Service revenue Operating expenses, excluding...

Q:

Consider the following income statement for the Heir Jordan Corporation: HEIR JORDAN CORPORATION Income Statement Sales Costs Taxable income Taxes (22%) Net income $ 53,000 40,900 $12,100 2,662...

Q:

Zot Corporation has provided the following contribution format income statement Revenue (500 units) $150,000 Variable Costs $110,000 Contribution Margin $40,000 Fixed Costs $32,000 1 pts Operating...