100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
WGU D426 Exam Questions And Answers Updated 2024/2025 $11.49
Add to cart
Quickly navigate to
Preview
  2.  
  3. WGU D426
  4.  
  5. WGU D426

Exam (elaborations)

WGU D426 Exam Questions And Answers Updated 2024/2025
 0 purchase
  • Course
  • WGU D426
  • Institution
  • WGU D426

©THESTAR EXAM SOLUTIONS 2024/2025 ALL RIGHTS RESERVED. 1 | P a g e WGU D426 Exam Questions And Answers Updated 2024/2025 A ____ is a column, or group of columns, used to identify a row. - answerPrimary key A ____ consists of a single column. - answerSimple primary key A ____ key consists of...

[Show more]

Preview 2 out of 8  pages

Document information

  • November 25, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • wgu d426 exam questions and answers updated 20242

Written for

  • WGU D426
  • WGU D426

Seller

avatar-seller
TheStar

Reviews received

Content preview

©THESTAR EXAM SOLUTIONS 2024/2025

ALL RIGHTS RESERVED.



WGU D426 Exam Questions And Answers
Updated 2024/2025


A ____ is a column, or group of columns, used to identify a row. - answer✔Primary key

A ____ consists of a single column. - answer✔Simple primary key

A ____ key consists of multiple columns. - answer✔Composite primary
All primary keys columns are necessary for uniqueness. When any column is removed, the
resulting simple or composite column is no longer unique. - answer✔Minimal
The ____ constraint in the CREATE TABLE statement names the table's ____. The ____
constraint ensures that a column or group of columns is always unique and non-null. -
answer✔Primary key
An _____ is a numeric column that is assigned an automatically incrementing value when a
new row is inserted. - answer✔Auto-increment column
The ____ keyword defines an auto-increment column. It follows the column's data type in a
CREATE TABLE statement. - answer✔AUTO_INCREMENT

A ____ is a column, or group of columns, that refer to a primary key. - answer✔Foreign key
____ requires foreign key values must either be NULL or match some value of the
referenced primary key. - answer✔Referential integrity
A ____ constraint is added to a CREATE TABLE statement with the ____ and REFERENCES
keywords. - answer✔Foreign key; references
A ____ foreign key is a simple or composite foreign key in which all columns are NULL. -
answer✔Fully NULL
____ is a relational rule that requires foreign key values to either be fully NULL or match
some primary key value. - answer✔Referential integrity



1|Page

, ©THESTAR EXAM SOLUTIONS 2024/2025

ALL RIGHTS RESERVED.
____ rejects an insert, update, or delete that violates referential integrity. -
answer✔RESTRICT

____ sets invalid foreign keys to NULL. - answer✔SET NULL

____ sets invalid foreign keys to the foreign key default value. - answer✔SET DEFAULT

____ propagates primary key changes to foreign keys. - answer✔CASCADE
Actions are specified in the optional ____ and ____ clauses of the FOREIGN KEY constraint.
____ and ____ are followed by either RESTRICT, SET NULL, SET DEFAULT, or CASCADE. -
answer✔ON UPDATE and ON DELETE
A ____ is a rule that governs allowable values in a database. ____ are based on relational
and business rules, and implemented with special keywords in a CREATE TABLE
statement. The database automatically rejects insert, update, and delete statements that
violate a constraint. - answer✔Constraint(s)
A ____ appears after the column name and data type in a CREATE TABLE statement.
Column constraints govern values in a single column. - answer✔Column constraint
A ____ appears in a separate clause of a CREATE TABLE statement and governs values in
one or more columns. - answer✔Table constraint
The ____ constraint ensures that values in a column, or group of columns, are unique. -
answer✔UNIQUE
The ____ constraint specifies an expression on one or more columns of a table. The
constraint is violated when the expression is FALSE and satisfied when the expression is
either TRUE or NULL. - answer✔CHECK
Table ____ may be names using the optional CONSTRAINT keyword, followed by the
constraint name and declaration. - answer✔CONSTRAINT
An ____ is a high-level representation of data requirements, ignoring implementing details.
- answer✔Entity-relationship model

An ____ is a person, place, product, concept, or activity. - answer✔Entity

A ____ is a statement about two entities. - answer✔Relationship

An ____ is a descriptive property of an entity. - answer✔Attribute

A ____ relates an entity to itself. - answer✔Reflexive relationship


2|Page

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller TheStar. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $11.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

67157 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling

Recently viewed by you

Exam (elaborations) ·

(0)

Form A - ATI Leadership Questions With Correct Answers

Exam (elaborations) ·

(70)

RELIAS DYSRHYTHMIA BASIC B 35 QUESTIONS WITH ANSWERS

Package deal ·

(0)

CLR 110 Bundled Exam Questions and CORRECT Answers

Package deal ·

(0)

NUR 301:BUNDLED Exams 2023 with 100% correct answers

Exam (elaborations) ·

(0)

Tour Guide NYC Latest Update with Verified Solutions

Exam (elaborations) ·

(0)

VATI Fundamentals Questions and Answers Fully solved
$11.49
  • (0)
Add to cart
Added