Question: What is referential integrity? A constraint stating that every nonnull foreign key value must match an existing key value. A constraint stating that a primary

What is referential integrity? A constraint stating that every nonnull foreign key value must match an existing key value. A constraint stating that a primary key must not contain a null value. A feature of relational databases that ensures the existence of a primary key. A feature of relational databases that enforces usage of appropriate data types

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!

please answer 2-5 10) (10 points) For each of the following statements, indicate whether it is true (T) or false (F). 1. A primary key can be made up of two or more attributes. 2. A restrict...

The requirement that every non-null foreign key value must reference an existing primary key value , enforces referential integrity participation integrity entity integrity O constraint integrity

QUESTION 16 8-4 question 1 Create an ERD based on the following Summit Sporting Goods scenario. Be sure to follow drawing conventions for readability and clarity "I'm a manager of a sporting-goods...

The ContosoSales.xlsx file contains the Contoso Data Model. a . Create a calculated column called StateName in the dGeography table that is equal to StateProvinceName if RegionCountryName is United...

Question 8 1 p t s The principle of 'entity integrity'. q , states that a non - null foreign key value in one table must match a primary key value in the related table. states that every primary key...

A rule that states that each foreign key value must match a primary key value in the other relation is called the: B ) key match rule. C ) entity key group rule. A ) referential integrity constraint....

A rule that states that each foreign key value must match a primary key value in the other relation is called the: Question 2 7 options: 1 ) foregin / primary match rule. 2 ) referential integrity...

PLEASE HURRY! I have a time limit on this question. Thank you! A rule that states that each foreign key value must match a primary key value in the other relation is called the: 1) foregin/primary...

A rule that states that each foreign key value must match a primary key value in the othifer relation is called the: referential integrity constraint. key match rule. entity key group rule. foreign /...

It may have been legal in this case, but was it ethical for the prosecution to repeatedly emphasize the size of the telemarketers commissions? Why or why not?

As of January 3, 2010. The Washington Post Company held significant, but not controlling, interest in Bowater Mercy Paper Company and other companies. These investments totaled $54.7 million on the...

What could potentially influence a person's perspective? Select one: a . Age b . Culture c . Family Support d . All the above

Stock in Daenerys Industries has a beta of 1.27. The market risk premium is 8 percent, and T-bills are currently yielding 3 percent. The company's most recent dividend was $1.7 per share, and...

1. Discuss the four components of language.

g. What do your findings suggest about the power of the media and their effect on identity formation and intercultural communication? (Think about avowal, ascription, and interpellation.)

f. What stereotypes were reinforced in the commercials?