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WGU D426 DATA MANAGEMENT-FOUNDATIONS STUDY GUIDE |COMPREHENSIVE EXAM QUESTIONS AND VERIFIED AN-SWERS|GRADED A+|PASS ON FIRST ATTEMPT|BRAND NEW 2026/2027 UPDATE!!!!!

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WGU D426 DATA MANAGEMENT-FOUNDATIONS STUDY GUIDE |COMPREHENSIVE EXAM QUESTIONS AND VERIFIED AN-SWERS|GRADED A+|PASS ON FIRST ATTEMPT|BRAND NEW 2026/2027 UPDATE!!!!!

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SWERS|GRADED A+|PASS ON FIRST ATTEMPT|BRAND NEW



A _______________ is software that helps business users interact with database systems -
ANSWER Database Application



Database Role:

What role is responsible for securing the database system against unauthorized users? This
role enforces procedures for user access and database system availability. - ANSWER Da-
tabase Administrator



Many database users should have limited access to specific tables, columns, or rows of a da-
tabase. What database "special requirement" allows database systems to allow individual
users access to specific data? - ANSWER Authorization



Database special requirements:

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



Architecture Question:

This interprets Queries, creates a plan to modify the database or retrieve data, and returns
query results to the application. - ANSWER Query Processor



Architecture Question:

The query processor performs ___________ to ensure the most efficient instructions are ex-
ecuted on the data. - ANSWER Query Optimization



Architecture Question:


1

,This translates the query processor instructions into low level file system commands that
modify or retrieve data. - ANSWER Storage Manager



Database sizes range from megabytes to many terabytes, so the storage manager uses
__________ to quickly locate data. - ANSWER Indexes



Architecture Question:

The ______________ ensures the following:

- Ensures transactions are properly executed.

- Prevents conflicts between concurrent transactions.

- Restores the database to a consistent state in the event of transaction or system failure. -
ANSWER Transaction Manager



General Database Systems Question:

This is data about the database, such as column names, number of rows in a table, etc. - AN-
SWER Metadata



Is the MongoDB database engine Open-Source, Private, Free, or Commercial? - ANSWER
Open-Source



What is the MongoDB database Engine type? - ANSWER NoSQL



SQL statement:

This command inputs rows into a table. - ANSWER INSERT



SQL Statement:

This command retrieves data from a table - ANSWER SELECT



SQL Statement:

2

, This command modifies data in a table. - ANSWER UPDATE



SQL Statement:

This command deletes rows from a table. - ANSWER DELETE



SQL Statement:

This statement makes a new table by specifying the table and column names. - ANSWER
CREATE TABLE



During creation, each column is assigned a ____________ that indicates the format of col-
umn values. These can be numeric, textual, or complex. - ANSWER Data Type



Data Type Question:

This data type stores integer values. - ANSWER INT



Data Type Question:

This datatype stores fractional numeric values. - ANSWER DECIMAL



Data Type Question:

This datatype stores textual values. - ANSWER VARCHAR



Data Type Question:

This datatype stores year, month, and day. - ANSWER DATE



Name for the first phase of database design. - ANSWER Analysis



Name for the second phase of database design. - ANSWER Logical Design



3

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