WGU D426 Objective Assessment Final
Exam 2025/2026 | Actual Exam | Western
Governors University | Data Management
Applications
Database Application -CORRECTANSWER Software that helps business users interact
with database systems.
Database Administrator -CORRECTANSWER Responsible for securing the database
system against unauthorized users. A database administrator enforces procedures for
user access and database system availability.
Authorization -CORRECTANSWER 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.
Rules -CORRECTANSWER Database systems ensure data is consistent with structural
and business rules.
Query Processor -CORRECTANSWER 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.
,Storage Manager -CORRECTANSWER 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.
Transaction Manager -CORRECTANSWER 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.
Metadata -CORRECTANSWER Data about the database, such as column names and
the number of rows in each table.
Relational Database -CORRECTANSWER Stores data in tables, columns, and rows,
similar to a spreadsheet.
Relational Database -CORRECTANSWER All _________ ________ systems support
the SQL query language.
Relational Database -CORRECTANSWER Relational systems are ideal for databases
that require an accurate record of every transaction, such as banking, airline reservation
systems, and student records.
, MongoDB (NoSQL) -CORRECTANSWER The newer non-relational systems are called
NoSQL, for 'not only SQL', and are optimized for big data.
SQL Statements -CORRECTANSWER INSERT inserts rows into a table.
SELECT retrieves data from a table.
UPDATE modifies data in a table.
DELETE deletes rows from a table.
CREATE TABLE (Statement) -CORRECTANSWER 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.
Data Type -CORRECTANSWER INT stores integer values.
DECIMAL stores fractional numeric values.
VARCHAR stores textual values.
DATE stores year, month, and day.
Database Design -CORRECTANSWER Analysis
Logical design
Physical design
Exam 2025/2026 | Actual Exam | Western
Governors University | Data Management
Applications
Database Application -CORRECTANSWER Software that helps business users interact
with database systems.
Database Administrator -CORRECTANSWER Responsible for securing the database
system against unauthorized users. A database administrator enforces procedures for
user access and database system availability.
Authorization -CORRECTANSWER 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.
Rules -CORRECTANSWER Database systems ensure data is consistent with structural
and business rules.
Query Processor -CORRECTANSWER 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.
,Storage Manager -CORRECTANSWER 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.
Transaction Manager -CORRECTANSWER 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.
Metadata -CORRECTANSWER Data about the database, such as column names and
the number of rows in each table.
Relational Database -CORRECTANSWER Stores data in tables, columns, and rows,
similar to a spreadsheet.
Relational Database -CORRECTANSWER All _________ ________ systems support
the SQL query language.
Relational Database -CORRECTANSWER Relational systems are ideal for databases
that require an accurate record of every transaction, such as banking, airline reservation
systems, and student records.
, MongoDB (NoSQL) -CORRECTANSWER The newer non-relational systems are called
NoSQL, for 'not only SQL', and are optimized for big data.
SQL Statements -CORRECTANSWER INSERT inserts rows into a table.
SELECT retrieves data from a table.
UPDATE modifies data in a table.
DELETE deletes rows from a table.
CREATE TABLE (Statement) -CORRECTANSWER 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.
Data Type -CORRECTANSWER INT stores integer values.
DECIMAL stores fractional numeric values.
VARCHAR stores textual values.
DATE stores year, month, and day.
Database Design -CORRECTANSWER Analysis
Logical design
Physical design
