WGU D426 OBJECTIVE ASSESSMENT DATA
MANAGEMENT FOUNDATIONS 2026
COMPREHENSIVE STUDY GUIDE SOLVED
QUESTION SET
◉ Database Administrator. Answer: Responsible for securing the
database system against unauthorized users. A database administrator
enforces procedures for user access and database system availability.
◉ Authorization. Answer: 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. Answer: Database systems ensure data is consistent with
structural and business rules.
◉ Query Processor. Answer: 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. Answer: 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. Answer: 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. Answer: 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.
◉ Relational Database. Answer: All _________ ________ systems
support the SQL query language.
◉ Relational Database. Answer: 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). Answer: The newer non-relational systems are
called NoSQL, for 'not only SQL', and are optimized for big data.
◉ SQL Statements. Answer: 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). Answer: 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. Answer: INT stores integer values.
DECIMAL stores fractional numeric values.
VARCHAR stores textual values.
DATE stores year, month, and day.
◉ Database Design. Answer: Analysis
Logical design
Physical design
◉ Analysis Phase, Conceptual Design, Entity-Relationship Modeling
(Database Design). Answer: This phase specifies database requirements
without regard to a specific database system. Requirements are
represented as entities, relationships, and attributes. An entity is a
person, place, activity, or thing. A relationship is a link between entities,
and an attribute is a descriptive property of an entity.
MANAGEMENT FOUNDATIONS 2026
COMPREHENSIVE STUDY GUIDE SOLVED
QUESTION SET
◉ Database Administrator. Answer: Responsible for securing the
database system against unauthorized users. A database administrator
enforces procedures for user access and database system availability.
◉ Authorization. Answer: 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. Answer: Database systems ensure data is consistent with
structural and business rules.
◉ Query Processor. Answer: 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. Answer: 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. Answer: 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. Answer: 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.
◉ Relational Database. Answer: All _________ ________ systems
support the SQL query language.
◉ Relational Database. Answer: 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). Answer: The newer non-relational systems are
called NoSQL, for 'not only SQL', and are optimized for big data.
◉ SQL Statements. Answer: 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). Answer: 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. Answer: INT stores integer values.
DECIMAL stores fractional numeric values.
VARCHAR stores textual values.
DATE stores year, month, and day.
◉ Database Design. Answer: Analysis
Logical design
Physical design
◉ Analysis Phase, Conceptual Design, Entity-Relationship Modeling
(Database Design). Answer: This phase specifies database requirements
without regard to a specific database system. Requirements are
represented as entities, relationships, and attributes. An entity is a
person, place, activity, or thing. A relationship is a link between entities,
and an attribute is a descriptive property of an entity.
