WGU D326 ADVANCED DATA MANAGEMENT PRACTICE EXAMINATION 2026 QUESTIONS WITH ANSWERS GRADED A+

WGU D326 ADVANCED DATA
MANAGEMENT PRACTICE EXAMINATION
2026 QUESTIONS WITH ANSWERS
GRADED A+

◍ General-purpose databases.
Answer: A database that contains a wide variety of data used in multiple
disciplines.
◍ INSERT.
Answer: A SQL command that allows the insertion of one or more data rows
into a table.
◍ predicate logic.
Answer: Used extensively in mathematics to provide a framework in which
an assertion (statement of fact) can be verified as either true or false.
◍ Write the SQL query to "List the NAMES of the products of which
salesperson Adams has sold more than 2000 units":.
Answer: SELECT PRODNAMEFROM SALESPERSON, PRODUCT,
SALESWHERE SALESPERSON.SPNUM=SALES.SPNUMAND
SALES.PRODNUM=PRODUCT.PRODNUMAND
SPNAME='Adams'AND QUANTITY>2000;
◍ Workgroup database.
Answer: A multiuser database that usually supports fewer than 50 users or is
used for a specific department in an organization.
◍ "A salesperson may have no customers or many customers.".
Answer:
◍ Natural Join.

, Answer: Matches each row in a table against each row in another table based
on common values found in columns sharing a common name and data type.
◍ existence-dependent.
Answer: A property of an entity whose existence depends on one or more
other entities. In such an environment, the existence-independent table must
be created and loaded first because the existence-dependent key cannot
reference a table that does not yet exist.
◍ HAVING.
Answer: A clause applied to the output of a GROUP BY operation to restrict
selected rows.
◍ relationship.
Answer: An association between entities.
◍ BETWEEN.
Answer: In SQL, a special comparison operator used to check whether a
value is within a range of specified values.
◍ Write the SQL query to "Find the name of the salesperson responsible for
Customer Number 1525":.
Answer: SELECT SPNAMEFROM SALESPERSON,
CUSTOMERWHERE
SALESPERSON.SPNUM=CUSTOMER.SPNUMAND CUSTNUM=1525;
◍ data cube.
Answer: The multidimensional data structure used to store and manipulate
data in a multidimensional DBMS. The location of each data value in the
data cube is based on its x-, y-, and z-axes. Data cubes are static, meaning
they must be created before they are used, so they cannot be created by an
ad hoc query.
◍ Class.
Answer: A collection of similar objects with shared structure (attributes) and
behavior (methods). A class encapsulates an object's data representation and
a method's implementation. Classes are organized in a class hierarchy.

,◍ functional dependence.
Answer: Within a relation R, an attribute B is functionally dependent on an
attribute A if and only if a given value of attribute A determines exactly one
value of attribute B. The relationship "B is dependent on A" is equivalent to
"A determines B," and is written as A B.
◍ Data Warehouse.
Answer: A data warehouse is the primary source of information that feeds
the analytical processing within an organization.
◍ Common DML commands:.
Answer: - UPDATE- DELETE- INSERT- MERGE- SELECT
◍ Normalization.
Answer: The process of organizing the fields and tables of a relational
database to minimize redundancy (duplication) and dependency.
◍ Second Normal Form.
Answer: All non-key attributes must be functionally dependent on the entire
key of that table.
◍ superclass.
Answer: In a class hierarchy, the superclass is the more general
classification from which the subclasses inherit data structures and
behaviors.
◍ repeating group.
Answer: In a relation, a characteristic describing a group of multiple entries
of the same type for a single key attribute occurrence. For example, a car
can have multiple colors for its top, interior, bottom, trim, and so on.
◍ Write the SQL query to "Retrieve the entire record for salesperson 186":.
Answer: SELECT *FROM SALESPERSONWHERE SPNUM=186;
◍ CREATE TABLE.
Answer: A SQL command that creates a table's structures using the
characteristics and attributes given.

, ◍ Online analytical processing (OLAP).
Answer: Decision support system (DSS) tools that use multidimensional
data analysis techniques. OLAP creates an advanced data analysis
environment that supports decision making, business modeling, and
operations research.
◍ Superkey.
Answer: A superkey is any number of columns that forces every row to be
unique.
◍ index.
Answer: An ordered array of index key values and row ID values (pointers).
Indexes are generally used to speed up and facilitate data retrieval. Also
known as an index key.
◍ composite key.
Answer: A multiple-attribute key.
◍ DROP TABLE.
Answer: A SQL command used to delete database objects such as tables,
views, indexes, and users.
◍ third normal form (3NF).
Answer: A table is in 3NF when it is in 2NF and no nonkey attribute is
functionally dependent on another nonkey attribute; that is, it cannot include
transitive dependencies.
◍ Structural independence.
Answer: A data characteristic in which changes in the database schema do
not affect data access.
◍ granularity.
Answer: The level of detail represented by the values stored in a table's row.
Data stored at its lowest level of granularity is said to be atomic data.
◍ LIKE operator.
Answer: - It allows you to specify partial character strings in a "wildcard"