WGU - D426: OBJECTIVE
ASSESSMENT EXAM QUESTIONS
AND ANSWERS 2025
, Database Application - ANSWERSoftware that helps business users interact with
database systems.
Database Administrator - ANSWERResponsible for securing the database system
against unauthorized users. A database administrator enforces procedures for user
access and database system availability.
Authorization - ANSWERMany database users should have limited access to specific
tables, columns, or rows of a database. Database systems authorize individual users to
access specific data.
Rules - ANSWERDatabase systems ensure data is consistent with structural and
business rules.
Query Processor - ANSWERInterprets 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.
Storage Manager - ANSWERTranslates 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.
Transaction Manager - ANSWEREnsures 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.
Metadata - ANSWERData about the database, such as column names and the number
of rows in each table.
Relational Database - ANSWERStores data in tables, columns, and rows, similar to a
spreadsheet.
Relational Database - ANSWERAll _________ ________ systems support the SQL
query language.
Relational Database - ANSWERRelational systems are ideal for databases that require
an accurate record of every transaction, such as banking, airline reservation systems,
and student records.
ASSESSMENT EXAM QUESTIONS
AND ANSWERS 2025
, Database Application - ANSWERSoftware that helps business users interact with
database systems.
Database Administrator - ANSWERResponsible for securing the database system
against unauthorized users. A database administrator enforces procedures for user
access and database system availability.
Authorization - ANSWERMany database users should have limited access to specific
tables, columns, or rows of a database. Database systems authorize individual users to
access specific data.
Rules - ANSWERDatabase systems ensure data is consistent with structural and
business rules.
Query Processor - ANSWERInterprets 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.
Storage Manager - ANSWERTranslates 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.
Transaction Manager - ANSWEREnsures 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.
Metadata - ANSWERData about the database, such as column names and the number
of rows in each table.
Relational Database - ANSWERStores data in tables, columns, and rows, similar to a
spreadsheet.
Relational Database - ANSWERAll _________ ________ systems support the SQL
query language.
Relational Database - ANSWERRelational systems are ideal for databases that require
an accurate record of every transaction, such as banking, airline reservation systems,
and student records.
