WGU D326 ADVANCED DATA
MANAGEMENT COMPREHENSIVE STUDY
GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ Used with GROUP BY to filter results..
Answer: HAVING
◍ HAVING (Clause).
Answer: The HAVING clause is used with the GROUP BY clause to filter
group results.
◍ MySQL Command-Line Client.
Answer: A text interface included in the MySQL Server download.
◍ Indicate primary key columns.
Answer: Bullets
◍ Single or multi-level index where pointers to table blocks are replaced with
primary key values.
Answer: Logical Index
◍ Combines two tables without comparing data..
Answer: Cross Join
◍ Group of nodes connected by a LAN, managed by separate operating system
instances. Similar to a parallel computer..
Answer: Cluster
◍ The number of index entries per block of a multi-level index..
Answer: Fan-Out
◍ An unordered collection of elements enclosed in braces..
, Answer: Set
◍ Computes the bucket containing the row from the value of the indexed
column..
Answer: Hash Function
◍ A string of operators, operands, and parentheses that evaluates to a single
value..
Answer: Expression
◍ Multiple values removed. Only one value in each cell..
Answer: First Normal Form
◍ Dependent Entities.
Answer: Weak Entities
◍ Subset of table rows..
Answer: Horizontal Partition
◍ Replacing a subquery with an equivalent join is called what?.
Answer: Flattening
◍ A directory of participating database objects such as tables, columns, and
indexes..
Answer: Global Catalog
◍ Data Type.
Answer: A ____ _____ is a named set of values, from which column values
are drawn.
◍ Database Design.
Answer: After entities, relationships, attributes, cardinality, and strong and
weak entities are determined, the database designer looks for supertype and
subtype entities.
◍ CROSS-JOIN.
Answer: A __________ combines two tables without comparing columns
without an ON clause. This is the only JOIN that does not require a
condition.
,◍ Forms when a network error prevents nodes from communicating..
Answer: Network Partition
◍ INT.
Answer: 4 bytes
◍ Fan-out.
Answer: The number of index entries per block is called the __________ of
a multi-level index.
◍ CHECK (Constraint).
Answer: The _______ constraint specifies an expression on one or more
columns of a table.
◍ EQUIJOIN.
Answer: An ___________ compares columns of two tables with the =
operator. This is the most common type of join.
◍ The LIKE operator performs case-insensitive pattern matching by default or
case-sensitive pattern matching if followed by this keyword..
Answer: BINARY
◍ Associates a federated database user with a participating database user..
Answer: User Mapping
◍ Entry for every table block.
Answer: Sparse Index
◍ LOWER(s) (Function).
Answer: Returns the lowercase "s". Or any specified characters.
◍ Logical Design Steps.
Answer: 1. Implement entities2. Implement relationships3. Implement
attributes4. Apply normal form
◍ Analytic database of raw, unprocessed data copied from multiple data
sources..
Answer: Data Lake
, ◍ Converts a SQL query into a sequence of low-level database actions, called
the query execution plan, which specifies precisely how to process a SQL
statement..
Answer: Query Optimizer
◍ Runs on multiple computers connected by a WAN.
Answer: Distributed Database
◍ Depict foreign keys. Starts at the foreign key and points to the referenced
table. RESTRICT, CASCADE, or SET NULL appears on the arrow, on top
read left-to-right, on bottom read right-to-left..
Answer: Arrows
◍ 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.
◍ Relationship minimum.
Answer: ______________ ____________ is the least number of instances of
one entity that can relate to a single instance of another entity.
◍ Row.
Answer: Is an unnamed tuple of values. Each value corresponds to a column
and belongs to the column's data type.
◍ Boyce-Codd normal form.
Answer: _______________________ ___________ _______ is ideal for
tables with frequent inserts, updates, and deletes.
◍ Database Application.
Answer: Software that helps business users interact with database systems.
◍ Can be exclusive or inclusive. Can be a part of an IS-A relationship..
Answer: Subtype Entities
◍ Five-step process - ETL: Extract-Transform Load 1) Extract data 2) Cleanse
MANAGEMENT COMPREHENSIVE STUDY
GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ Used with GROUP BY to filter results..
Answer: HAVING
◍ HAVING (Clause).
Answer: The HAVING clause is used with the GROUP BY clause to filter
group results.
◍ MySQL Command-Line Client.
Answer: A text interface included in the MySQL Server download.
◍ Indicate primary key columns.
Answer: Bullets
◍ Single or multi-level index where pointers to table blocks are replaced with
primary key values.
Answer: Logical Index
◍ Combines two tables without comparing data..
Answer: Cross Join
◍ Group of nodes connected by a LAN, managed by separate operating system
instances. Similar to a parallel computer..
Answer: Cluster
◍ The number of index entries per block of a multi-level index..
Answer: Fan-Out
◍ An unordered collection of elements enclosed in braces..
, Answer: Set
◍ Computes the bucket containing the row from the value of the indexed
column..
Answer: Hash Function
◍ A string of operators, operands, and parentheses that evaluates to a single
value..
Answer: Expression
◍ Multiple values removed. Only one value in each cell..
Answer: First Normal Form
◍ Dependent Entities.
Answer: Weak Entities
◍ Subset of table rows..
Answer: Horizontal Partition
◍ Replacing a subquery with an equivalent join is called what?.
Answer: Flattening
◍ A directory of participating database objects such as tables, columns, and
indexes..
Answer: Global Catalog
◍ Data Type.
Answer: A ____ _____ is a named set of values, from which column values
are drawn.
◍ Database Design.
Answer: After entities, relationships, attributes, cardinality, and strong and
weak entities are determined, the database designer looks for supertype and
subtype entities.
◍ CROSS-JOIN.
Answer: A __________ combines two tables without comparing columns
without an ON clause. This is the only JOIN that does not require a
condition.
,◍ Forms when a network error prevents nodes from communicating..
Answer: Network Partition
◍ INT.
Answer: 4 bytes
◍ Fan-out.
Answer: The number of index entries per block is called the __________ of
a multi-level index.
◍ CHECK (Constraint).
Answer: The _______ constraint specifies an expression on one or more
columns of a table.
◍ EQUIJOIN.
Answer: An ___________ compares columns of two tables with the =
operator. This is the most common type of join.
◍ The LIKE operator performs case-insensitive pattern matching by default or
case-sensitive pattern matching if followed by this keyword..
Answer: BINARY
◍ Associates a federated database user with a participating database user..
Answer: User Mapping
◍ Entry for every table block.
Answer: Sparse Index
◍ LOWER(s) (Function).
Answer: Returns the lowercase "s". Or any specified characters.
◍ Logical Design Steps.
Answer: 1. Implement entities2. Implement relationships3. Implement
attributes4. Apply normal form
◍ Analytic database of raw, unprocessed data copied from multiple data
sources..
Answer: Data Lake
, ◍ Converts a SQL query into a sequence of low-level database actions, called
the query execution plan, which specifies precisely how to process a SQL
statement..
Answer: Query Optimizer
◍ Runs on multiple computers connected by a WAN.
Answer: Distributed Database
◍ Depict foreign keys. Starts at the foreign key and points to the referenced
table. RESTRICT, CASCADE, or SET NULL appears on the arrow, on top
read left-to-right, on bottom read right-to-left..
Answer: Arrows
◍ 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.
◍ Relationship minimum.
Answer: ______________ ____________ is the least number of instances of
one entity that can relate to a single instance of another entity.
◍ Row.
Answer: Is an unnamed tuple of values. Each value corresponds to a column
and belongs to the column's data type.
◍ Boyce-Codd normal form.
Answer: _______________________ ___________ _______ is ideal for
tables with frequent inserts, updates, and deletes.
◍ Database Application.
Answer: Software that helps business users interact with database systems.
◍ Can be exclusive or inclusive. Can be a part of an IS-A relationship..
Answer: Subtype Entities
◍ Five-step process - ETL: Extract-Transform Load 1) Extract data 2) Cleanse
