WGU D253 TASK 1 AND TASK 2 COMBINED
ACTUAL TEST PAPER 2026 COMPLETE
QUESTIONS AND SOLUTIONS ACCURATE
STUDY MATERIAL GRADED A+
⩥ Logical Data Model. Answer: Provides foundation for designing a
database
⩥ Physical Data Model. Answer: a representation of a data design as
implemented, or intended to be implemented, in a database management
system
⩥ Pointers. Answer: Used to show the relationship between data fields
and tables.
⩥ Referential Integrity. Answer: Table relationships must always be
consistent; for an entity or object to exist in a table, an equal value must
exist in the referenced table; the primary and foreign keys must be equal.
⩥ Types of relationships in a relational database model. Answer: One-to-
One, One-to-Many, and Many-to-Many
⩥ Data Manipulation Language. Answer: A language that allows users to
easily modify the data in a database.
,⩥ Data Warehousing. Answer: a system used for reporting and data
analysis, and is considered a core component of business intelligence;
data is stored in one place.
⩥ data mart. Answer: smaller subset database from a data warehouse
typically focused on a single area or function.
⩥ Extraction, transformation, and loading (ETL). Answer: a process in
which data is extracted from a computer, transformed (or cleansed) into
a format appropriate for the data warehouse, and then transferred to the
data warehouse.
⩥ Direct Move. Answer: Data that does not need to be transformed
being transferred to a data warehouse.
⩥ Data mining. Answer: process of identifying hidden patterns and
relationships in structured databases and applying rules to that data in
order to predict future behavior.
⩥ Web Mining. Answer: process of identifying hidden patterns and
relationships in non-structured databases, such as the Internet, and
applying rules to that data in order to predict future behavior.
, ⩥ Text mining. Answer: High-quality information is typically derived
through the devising of patterns and trends through means such as
statistical pattern learning.
⩥ Partitioning. Answer: Dividing a database into more manageable
segments.
⩥ Master Data. Answer: Objects shared across the enterprise; it is key to
accurate business reporting and analysis
⩥ Data Governance. Answer: Concerned with the management of data,
including maximizing quality through effective utilization, availability,
and protection.
⩥ Entity-Relationship Diagram (ERD). Answer: Illustrates the
relationships among all of the tables in a database.
⩥ Database Administrator. Answer: Responsible for the creation and
management of the entire database management system (DBMS).
⩥ Data Administrator. Answer: Responsible for determining and
monitoring employees' access to the company's database management
system (DBMS).
ACTUAL TEST PAPER 2026 COMPLETE
QUESTIONS AND SOLUTIONS ACCURATE
STUDY MATERIAL GRADED A+
⩥ Logical Data Model. Answer: Provides foundation for designing a
database
⩥ Physical Data Model. Answer: a representation of a data design as
implemented, or intended to be implemented, in a database management
system
⩥ Pointers. Answer: Used to show the relationship between data fields
and tables.
⩥ Referential Integrity. Answer: Table relationships must always be
consistent; for an entity or object to exist in a table, an equal value must
exist in the referenced table; the primary and foreign keys must be equal.
⩥ Types of relationships in a relational database model. Answer: One-to-
One, One-to-Many, and Many-to-Many
⩥ Data Manipulation Language. Answer: A language that allows users to
easily modify the data in a database.
,⩥ Data Warehousing. Answer: a system used for reporting and data
analysis, and is considered a core component of business intelligence;
data is stored in one place.
⩥ data mart. Answer: smaller subset database from a data warehouse
typically focused on a single area or function.
⩥ Extraction, transformation, and loading (ETL). Answer: a process in
which data is extracted from a computer, transformed (or cleansed) into
a format appropriate for the data warehouse, and then transferred to the
data warehouse.
⩥ Direct Move. Answer: Data that does not need to be transformed
being transferred to a data warehouse.
⩥ Data mining. Answer: process of identifying hidden patterns and
relationships in structured databases and applying rules to that data in
order to predict future behavior.
⩥ Web Mining. Answer: process of identifying hidden patterns and
relationships in non-structured databases, such as the Internet, and
applying rules to that data in order to predict future behavior.
, ⩥ Text mining. Answer: High-quality information is typically derived
through the devising of patterns and trends through means such as
statistical pattern learning.
⩥ Partitioning. Answer: Dividing a database into more manageable
segments.
⩥ Master Data. Answer: Objects shared across the enterprise; it is key to
accurate business reporting and analysis
⩥ Data Governance. Answer: Concerned with the management of data,
including maximizing quality through effective utilization, availability,
and protection.
⩥ Entity-Relationship Diagram (ERD). Answer: Illustrates the
relationships among all of the tables in a database.
⩥ Database Administrator. Answer: Responsible for the creation and
management of the entire database management system (DBMS).
⩥ Data Administrator. Answer: Responsible for determining and
monitoring employees' access to the company's database management
system (DBMS).
