Data Management - Foundations - D426 WGU-REAL ACTUAL
EXAM-LATEST UPDATE 2025 | COMPLETE QUESTIONS
WITH CORRECT DETAILED ANSWERS | RATED 100%
CORRECT!! ALREADY GRADED A+
Data - (answers)Numeric, textual, visual, or audio information that describes real-world systems. It is
collected and processed to aid in a variety of tasks.
Analog Data - (answers)Most common before computers. Audio was recorded as vibrations impressed
on vinyl disks.
Digital Data - (answers)Most common today. Encoded as 0s and 1s on electronic magnetic data.
Database - (answers)A collection of data in structured format. In principle, can be stored on paper or
even clay tablets.
Database System (DBMS) - (answers)Software that reads and writes in a database.
Query - (answers)A request to retrieve or change data in a database. Typically inserts new data,
retrieves data, updates, data, or deletes data from a database.
Query Language - (answers)Specialized programming language designed specifically for database
systems. Reads and writes data efficiently.
Database Application - (answers)Software that HELPS business users interact with database systems.
Database Administrator - (answers)What role am I?
Responsible for securing the database system against unauthorized users. They enforce procedures for
user access and database system availability.
,Database Designer - (answers)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.
Database Programmer - (answers)What role am I?
Develop programs that utilize a database and write applications that combine query languages and
general purpose programming language.
Database User - (answers)What role am I?
A consumer of data in a database. They request, update, or use stored data to generate reports or
information.
Transaction - (answers)A group of queries that MUST be completed or rejected as a whole.
Architecture - (answers)Describes the internal components AND the relationships between components.
Query Processor - (answers)Interprets queries, creates a plan to modify the database or retrieve the
data, and returns query results to the application. Performs query optimization.
Query Optimization - (answers)Ensures efficient instructions are executed on the data from the Query
Processor.
Storage Manager - (answers)Translates the query processor instructions into low-level file-system
commands that modify OR retrieve data. Uses indexes to quickly locate data.
Transaction Manager - (answers)Ensures transactions are properly executed. Prevents conflicts between
concurrent transactions. Also restores the database to a consistent state in the event of a failure.
, Log - (answers)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.
Catalog/Data Dictionary/Repository - (answers)A directory of tables, columns, indexes, and other
database objects.
Relational Database - (answers)Stores data in tables, columns, and rows, SIMILAR to a spreadsheet. It
also supports SQL. Made up of relations.
NoSQL - (answers)A new generation of DBMS that is NOT based on the traditional relational database
model.
CRUD - (answers)Acronym for actions that can be performed by a query.
SQL Statement - (answers)A database command such as a query that inserts, retrieves, updates, or
deletes data. Composed of one or more clauses.
INSERT - (answers)Inserts rows into a table.
SELECT - (answers)Retrieves data from a table.
UPDATE - (answers)Modifies data in a table.
DELETE - (answers)Deletes rows from a table.
CREATE TABLE - (answers)Creates a new table by specifying the table and column names.
Data Type - (answers)Indicates the TYPE of data that can be stored in a field of a column.
EXAM-LATEST UPDATE 2025 | COMPLETE QUESTIONS
WITH CORRECT DETAILED ANSWERS | RATED 100%
CORRECT!! ALREADY GRADED A+
Data - (answers)Numeric, textual, visual, or audio information that describes real-world systems. It is
collected and processed to aid in a variety of tasks.
Analog Data - (answers)Most common before computers. Audio was recorded as vibrations impressed
on vinyl disks.
Digital Data - (answers)Most common today. Encoded as 0s and 1s on electronic magnetic data.
Database - (answers)A collection of data in structured format. In principle, can be stored on paper or
even clay tablets.
Database System (DBMS) - (answers)Software that reads and writes in a database.
Query - (answers)A request to retrieve or change data in a database. Typically inserts new data,
retrieves data, updates, data, or deletes data from a database.
Query Language - (answers)Specialized programming language designed specifically for database
systems. Reads and writes data efficiently.
Database Application - (answers)Software that HELPS business users interact with database systems.
Database Administrator - (answers)What role am I?
Responsible for securing the database system against unauthorized users. They enforce procedures for
user access and database system availability.
,Database Designer - (answers)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.
Database Programmer - (answers)What role am I?
Develop programs that utilize a database and write applications that combine query languages and
general purpose programming language.
Database User - (answers)What role am I?
A consumer of data in a database. They request, update, or use stored data to generate reports or
information.
Transaction - (answers)A group of queries that MUST be completed or rejected as a whole.
Architecture - (answers)Describes the internal components AND the relationships between components.
Query Processor - (answers)Interprets queries, creates a plan to modify the database or retrieve the
data, and returns query results to the application. Performs query optimization.
Query Optimization - (answers)Ensures efficient instructions are executed on the data from the Query
Processor.
Storage Manager - (answers)Translates the query processor instructions into low-level file-system
commands that modify OR retrieve data. Uses indexes to quickly locate data.
Transaction Manager - (answers)Ensures transactions are properly executed. Prevents conflicts between
concurrent transactions. Also restores the database to a consistent state in the event of a failure.
, Log - (answers)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.
Catalog/Data Dictionary/Repository - (answers)A directory of tables, columns, indexes, and other
database objects.
Relational Database - (answers)Stores data in tables, columns, and rows, SIMILAR to a spreadsheet. It
also supports SQL. Made up of relations.
NoSQL - (answers)A new generation of DBMS that is NOT based on the traditional relational database
model.
CRUD - (answers)Acronym for actions that can be performed by a query.
SQL Statement - (answers)A database command such as a query that inserts, retrieves, updates, or
deletes data. Composed of one or more clauses.
INSERT - (answers)Inserts rows into a table.
SELECT - (answers)Retrieves data from a table.
UPDATE - (answers)Modifies data in a table.
DELETE - (answers)Deletes rows from a table.
CREATE TABLE - (answers)Creates a new table by specifying the table and column names.
Data Type - (answers)Indicates the TYPE of data that can be stored in a field of a column.
