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: OBJECTIVE ASSESMENT 2VERIFIED EXAM QUESTIONS WITH CORRECT CLEARLY HIGHLIGHTED ANSWERS LATEST UPDATE 2024 GUARANTEED SUCCESS $13.49
Add to cart
Quickly navigate to
Preview
  2.  
  3. WGU-D426
  4.  
  5. WGU-D426

Exam (elaborations)

WGU - D426: OBJECTIVE ASSESMENT 2VERIFIED EXAM QUESTIONS WITH CORRECT CLEARLY HIGHLIGHTED ANSWERS LATEST UPDATE 2024 GUARANTEED SUCCESS
 0 purchase
  • Course
  • WGU-D426
  • Institution
  • WGU-D426

WGU - D426: OBJECTIVE ASSESMENT 2VERIFIED EXAM QUESTIONS WITH CORRECT CLEARLY HIGHLIGHTED ANSWERS LATEST UPDATE 2024GUARANTEED SUCCESS Software that helps business users interact with database systems. - ANSWER Database Application Responsible for securing the database system against...

[Show more]

Preview 3 out of 19  pages

Document information

  • September 21, 2024
  • 19
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

Written for

  • WGU-D426
  • WGU-D426

Seller

avatar-seller
BRILLIANTSOLUTIONS

Reviews received

Content preview

WGU - D426: OBJECTIVE ASSESMENT
2\VERIFIED EXAM QUESTIONS WITH
CORRECT CLEARLY HIGHLIGHTED
ANSWERS LATEST UPDATE
2024\GUARANTEED SUCCESS


Software that helps business users interact with database systems. - ANSWER Database
Application

Responsible for securing the database system against unauthorized users. A database
administrator enforces procedures for user access and database system availability. - ANSWER
Database Administrator



Many database users should have limited access to specific tables, columns, or rows of a
database. Database systems authorize individual users to access specific data. - ANSWER
Authorization



Database systems ensure data is consistent with structural and business rules. - ANSWER
Rules



Interprets queries, creates a plan to modify the database or retrieve data, and returns query
results to the application. Performs query optimization to ensure the most efficient instructions
are executed on the data. - ANSWER Query Processor

, Translates the query processor instructions into low-level file-system commands that modify
or retrieve data. Database sizes range from megabytes to many terabytes, so the storage
manager uses indexes to quickly locate data. - ANSWER Storage Manager



Ensures transactions are properly executed. The transaction manager prevents conflicts
between concurrent transactions. The transaction manager also restores the database to a
consistent state in the event of a transaction or system failure. - ANSWER Transaction Manager



Data about the database, such as column names and the number of rows in each table. -
ANSWER Metadata



Stores data in tables, columns, and rows, similar to a spreadsheet. - ANSWER Relational
Database



All _________ ________ systems support the SQL query language. - ANSWER Relational
Database



Relational systems are ideal for databases that require an accurate record of every
transaction, such as banking, airline reservation systems, and student records. - ANSWER
Relational Database



The newer non-relational systems are called NoSQL, for 'not only SQL', and are optimized for
big data. - ANSWER MongoDB (NoSQL)



INSERT inserts rows into a table.

SELECT retrieves data from a table.

UPDATE modifies data in a table.

DELETE deletes rows from a table. - ANSWER SQL Statements

, A statement that creates a new table by specifying the table and column names. Each
column is assigned a data type that indicates the format of column values. Data types can be
numeric, textual, or complex. - ANSWER CREATE TABLE (Statement)



INT stores integer values.

DECIMAL stores fractional numeric values.

VARCHAR stores textual values.

DATE stores year, month, and day. - ANSWER Data Type



Analysis

Logical design

Physical design - ANSWER Database Design



This phase specifies database requirements without regard to a specific database system.
Requirements are represented as entities, relationships, and attributes. An entity is a person,
place, activity, or thing. A relationship is a link between entities, and an attribute is a descriptive
property of an entity. - ANSWER Analysis Phase, Conceptual Design, Entity-Relationship
Modeling (Database Design)



This phase implements database requirements in a specific database system. For relational
database systems, _________ design converts entities, relationships, and attributes into tables,
keys, and columns. - ANSWER Logical Design (Database Design)



Specifies indexes, table structures, and partitions. This phase adds indexes and specifies how
tables are organized on storage media. Affects query processing speed but never affects the
query result. - ANSWER Physical Design



Allows database designers to tune query performance without changes to application
programs. - ANSWER Data Independence

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 BRILLIANTSOLUTIONS. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $13.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

69411 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
$13.49
  • (0)
Add to cart
Added