WGU D426 DATA MANAGEMENT - FOUNDATION
OBJECTIVE ASSESSMENT PRACTICE EXAM | PRACTICE
OA EXAM (V2 -LWO2) LATEST 2025/26 UPDATE | WITH
COPLETE SOLUTIONS.
Database Application Answer - Software that helps business users interact with
database systems.
Database Administrator Answer - The individual who is responsible for
safeguarding the database system against unauthorized access and enforcing
procedures for user access and system availability.
Database Designer Answer - Determines the format of each data element and
the overall database structure.
Authorization Answer - Many database users should have limited access to
specific tables, columns, or rows of a database. Database systems use this to
grant individual users access to specific data.
Query Processor Answer - Interprets queries, creates a plan to modify the
database or retrieve data, and returns query results to the application
Rules Answer - Database systems ensure data is consistent with structural and
business rules.
What does the query processor perform? Answer - Query optimization to
ensure the most efficient instructions are executed on the data.
,Storage Manager Answer - Translates the query processor instructions into
low-level file system commands that modify or retrieve data.
Indexes Answer - Database sizes range from megabytes to many terabytes, so
the storage manager uses indexes to quickly locate data.
Transaction Manager Answer - The transaction manager ensures efficient
transaction execution, prevents conflicts between concurrent transactions, and
restores the database to a consistent state in case of a transaction or system
failure.
Metadata Answer - Is data about the database, such as column names and the
number of rows in each table.
Relational Database Answer - Stores data in tables, columns, and rows, similar
to a spreadsheet.
SQL Query Language Answer - All relational database systems support this.
Relational systems are ideal for databases that require.... Answer - An accurate
record of every transaction, such as banking, airline reservation systems, and
student records.
NoSQL Answer - A nonrelational database.
INSERT Answer - Inserts rows into a table.
SELECT Answer - Retrieves data from a table.
, UPDATE Answer - Modifies data in a table.
DELETE Answer - Deletes rows from a table.
CREATE TABLE Answer - Statement creates a new table by specifying the table
and column names.
Data Type Answer - Indicates the format column names. These can be
numerical, textual or complex.
INT Answer - Stores integer values.
DECIMAL Answer - Stores fractional numeric values.
VARCHAR Answer - Stores textual values.
DATE Answer - Stores year, month, and day.
The Analysis Phase Answer - Specifies database requirements without regard
to a specific database system. Requirements are represented as entities,
relationships, and attributes.
Analysis Answer - Has many alternative names, conceptual design, entity-
relationship modeling, and requirements definition.
What shape represents an Entitiy? Answer - Rectangle
OBJECTIVE ASSESSMENT PRACTICE EXAM | PRACTICE
OA EXAM (V2 -LWO2) LATEST 2025/26 UPDATE | WITH
COPLETE SOLUTIONS.
Database Application Answer - Software that helps business users interact with
database systems.
Database Administrator Answer - The individual who is responsible for
safeguarding the database system against unauthorized access and enforcing
procedures for user access and system availability.
Database Designer Answer - Determines the format of each data element and
the overall database structure.
Authorization Answer - Many database users should have limited access to
specific tables, columns, or rows of a database. Database systems use this to
grant individual users access to specific data.
Query Processor Answer - Interprets queries, creates a plan to modify the
database or retrieve data, and returns query results to the application
Rules Answer - Database systems ensure data is consistent with structural and
business rules.
What does the query processor perform? Answer - Query optimization to
ensure the most efficient instructions are executed on the data.
,Storage Manager Answer - Translates the query processor instructions into
low-level file system commands that modify or retrieve data.
Indexes Answer - Database sizes range from megabytes to many terabytes, so
the storage manager uses indexes to quickly locate data.
Transaction Manager Answer - The transaction manager ensures efficient
transaction execution, prevents conflicts between concurrent transactions, and
restores the database to a consistent state in case of a transaction or system
failure.
Metadata Answer - Is data about the database, such as column names and the
number of rows in each table.
Relational Database Answer - Stores data in tables, columns, and rows, similar
to a spreadsheet.
SQL Query Language Answer - All relational database systems support this.
Relational systems are ideal for databases that require.... Answer - An accurate
record of every transaction, such as banking, airline reservation systems, and
student records.
NoSQL Answer - A nonrelational database.
INSERT Answer - Inserts rows into a table.
SELECT Answer - Retrieves data from a table.
, UPDATE Answer - Modifies data in a table.
DELETE Answer - Deletes rows from a table.
CREATE TABLE Answer - Statement creates a new table by specifying the table
and column names.
Data Type Answer - Indicates the format column names. These can be
numerical, textual or complex.
INT Answer - Stores integer values.
DECIMAL Answer - Stores fractional numeric values.
VARCHAR Answer - Stores textual values.
DATE Answer - Stores year, month, and day.
The Analysis Phase Answer - Specifies database requirements without regard
to a specific database system. Requirements are represented as entities,
relationships, and attributes.
Analysis Answer - Has many alternative names, conceptual design, entity-
relationship modeling, and requirements definition.
What shape represents an Entitiy? Answer - Rectangle
