WGU D426 Data Management Foundations
Actual Exam L2025 Data Management
Foundations D426 WGU Exam Latest 2025
Questions and Correct Answers Rated A+
Numeric, textual, visual, or audio information that describes real-world
systems. It is collected and processed to aid in a variety of tasks. -
Answer-Data
Most common before computers. Audio was recorded as vibrations
impressed on vinyl disks. -Answer-Analog Data
Most common today. Encoded as 0s and 1s on electronic magnetic
data. -Answer-Digital Data
A collection of data in structured format. In principle, can be stored on
paper or even clay tablets. -Answer-Database
Software that reads and writes in a database. -Answer-Database
System (DBMS)
A request to retrieve or change data in a database. Typically inserts
new data, retrieves data, updates, data, or deletes data from a
database. -Answer-Query
Specialized programming language designed specifically for database
systems. Reads and writes data efficiently. -Answer-Query Language
Software that HELPS business users interact with database systems.
-Answer-Database Application
,What role am I?
Responsible for securing the database system against unauthorized
users. They enforce procedures for user access and database system
availability. -Answer-Database Administrator
What role am I?
Determines the format of each data element AND the overall database
STRUCTURE. Must balance priorities like including storage, response
time, and support for rules that govern the data. -Answer-Database
Designer
What role am I?
Develop programs that utilize a database and write applications that
combine query languages and general purpose programming
language. -Answer-Database Programmer
What role am I?
A consumer of data in a database. They request, update, or use
stored data to generate reports or information. -Answer-Database
User
A group of queries that MUST be completed or rejected as a whole. -
Answer-Transaction
Describes the internal components AND the relationships between
components. -Answer-Architecture
,Interprets queries, creates a plan to modify the database or retrieve
the data, and returns query results to the application. Performs query
optimization. -Answer-Query Processor
Ensures efficient instructions are executed on the data from the Query
Processor. -Answer-Query Optimization
Translates the query processor instructions into low-level file-system
commands that modify OR retrieve data. Uses indexes to quickly
locate data. -Answer-Storage Manager
Ensures transactions are properly executed. Prevents conflicts
between concurrent transactions. Also restores the database to a
consistent state in the event of a failure. -Answer-Transaction
Manager
A file containing a complete record of ALL inserts, updates, and
deletes processed by the database. The records can be used to
restore a database. -Answer-Log
A directory of tables, columns, indexes, and other database objects. -
Answer-Catalog/Data Dictionary/Repository
Stores data in tables, columns, and rows, SIMILAR to a spreadsheet.
It also supports SQL. Made up of relations. -Answer-Relational
Database
A new generation of DBMS that is NOT based on the traditional
relational database model. -Answer-NoSQL
Acronym for actions that can be performed by a query. -Answer-
CRUD
, A database command such as a query that inserts, retrieves, updates,
or deletes data. Composed of one or more clauses. -Answer-SQL
Statement
Inserts rows into a table. -Answer-INSERT
Retrieves data from a table. -Answer-SELECT
Modifies data in a table. -Answer-UPDATE
Deletes rows from a table. -Answer-DELETE
Creates a new table by specifying the table and column names. -
Answer-CREATE TABLE
Indicates the TYPE of data that can be stored in a field of a column. -
Answer-Data Type
Allows database administrators to improve query performance by
changing the organization of data on storage devices, without
affecting query results or changes to programs. -Answer-Data
Independence
A specification of database objects such as tables, columns data
types, and indexes. Also refers to the process used to develop the
specifications. -Answer-Database Design
Data ABOUT the database, such as column names and the number of
rows in each table. -Answer-Metadata
Actual Exam L2025 Data Management
Foundations D426 WGU Exam Latest 2025
Questions and Correct Answers Rated A+
Numeric, textual, visual, or audio information that describes real-world
systems. It is collected and processed to aid in a variety of tasks. -
Answer-Data
Most common before computers. Audio was recorded as vibrations
impressed on vinyl disks. -Answer-Analog Data
Most common today. Encoded as 0s and 1s on electronic magnetic
data. -Answer-Digital Data
A collection of data in structured format. In principle, can be stored on
paper or even clay tablets. -Answer-Database
Software that reads and writes in a database. -Answer-Database
System (DBMS)
A request to retrieve or change data in a database. Typically inserts
new data, retrieves data, updates, data, or deletes data from a
database. -Answer-Query
Specialized programming language designed specifically for database
systems. Reads and writes data efficiently. -Answer-Query Language
Software that HELPS business users interact with database systems.
-Answer-Database Application
,What role am I?
Responsible for securing the database system against unauthorized
users. They enforce procedures for user access and database system
availability. -Answer-Database Administrator
What role am I?
Determines the format of each data element AND the overall database
STRUCTURE. Must balance priorities like including storage, response
time, and support for rules that govern the data. -Answer-Database
Designer
What role am I?
Develop programs that utilize a database and write applications that
combine query languages and general purpose programming
language. -Answer-Database Programmer
What role am I?
A consumer of data in a database. They request, update, or use
stored data to generate reports or information. -Answer-Database
User
A group of queries that MUST be completed or rejected as a whole. -
Answer-Transaction
Describes the internal components AND the relationships between
components. -Answer-Architecture
,Interprets queries, creates a plan to modify the database or retrieve
the data, and returns query results to the application. Performs query
optimization. -Answer-Query Processor
Ensures efficient instructions are executed on the data from the Query
Processor. -Answer-Query Optimization
Translates the query processor instructions into low-level file-system
commands that modify OR retrieve data. Uses indexes to quickly
locate data. -Answer-Storage Manager
Ensures transactions are properly executed. Prevents conflicts
between concurrent transactions. Also restores the database to a
consistent state in the event of a failure. -Answer-Transaction
Manager
A file containing a complete record of ALL inserts, updates, and
deletes processed by the database. The records can be used to
restore a database. -Answer-Log
A directory of tables, columns, indexes, and other database objects. -
Answer-Catalog/Data Dictionary/Repository
Stores data in tables, columns, and rows, SIMILAR to a spreadsheet.
It also supports SQL. Made up of relations. -Answer-Relational
Database
A new generation of DBMS that is NOT based on the traditional
relational database model. -Answer-NoSQL
Acronym for actions that can be performed by a query. -Answer-
CRUD
, A database command such as a query that inserts, retrieves, updates,
or deletes data. Composed of one or more clauses. -Answer-SQL
Statement
Inserts rows into a table. -Answer-INSERT
Retrieves data from a table. -Answer-SELECT
Modifies data in a table. -Answer-UPDATE
Deletes rows from a table. -Answer-DELETE
Creates a new table by specifying the table and column names. -
Answer-CREATE TABLE
Indicates the TYPE of data that can be stored in a field of a column. -
Answer-Data Type
Allows database administrators to improve query performance by
changing the organization of data on storage devices, without
affecting query results or changes to programs. -Answer-Data
Independence
A specification of database objects such as tables, columns data
types, and indexes. Also refers to the process used to develop the
specifications. -Answer-Database Design
Data ABOUT the database, such as column names and the number of
rows in each table. -Answer-Metadata
