5/29/25, 9:21 PM WGU D426 EXAM 2025 | ALL QUESTIONS AND CORRECT ANSWERS (ALREADY GRADED A+) | VERIFIED ANSWERS | LATE…
WGU D426 EXAM 2025\2026 | ALL QUESTIONS AND
CORRECT ANSWERS (ALREADY GRADED A+) | VERIFIED
ANSWERS | LATEST VERSION | WESTERN GOVERNORS
UNIVERSITY
A table is in when all non-key Second normal form
columns
depend on the whole primary
key.
Informally, a table is in Third normal form
_______________when all
non-key
columns depend on the key,
the whole key, and nothing
but the key.
A _ is a simple or composite Candidate key; Minimal
column that
is unique and minimal
______________ means all
columns are necessary for
uniqueness.
A _ column is a column that is Non-key
not
contained in a candidate key.
A table is in if, whenever a Third normal form
non-key
column A depends on
column B, then B is unique.
Columns A and B may be
simple or composite.
A table is in if, whenever Boyce-Codd Normal Form
column A (gold standards of table design)
depends on column B, then B This definition is identical to 3NF except the term 'non-key' is
is unique. removed.
Columns A and B may be
simple or composite.
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, 5/29/25, 9:21 PM WGU D426 EXAM 2025 | ALL QUESTIONS AND CORRECT ANSWERS (ALREADY GRADED A+) | VERIFIED ANSWERS | LATE…
____ eliminates redundancy Normalization
by decomposing a table into
two or more tables in higher
normal form.
Column A Column B when Depends on
each B value
is related to at most one A
value. A and B may be
simple or composite
columns.
In a table, if column A Boyce-Codd Normal Form
depends on
column B, then B must be
unique.
____ means intentionally Denormalization
introducing redundancy by
merging tables.
A _ is a scheme for organizing Table structure
rows in
blocks on storage media.
In a , no order is imposed on Heap table
rows.
In a , the database designer Sorted table; sort column
identifies a
_ that determines physical
row order.
In a , rows are assigned to Hash table
buckets.
A _ is a block or group of Bucket
blocks
containing rows.
The is a column or group of Hash key
columns,
usually the primary key.
The computes the bucket Hash function
containing
the row from the hash key.
The is a simple hash function Modulo function
with four
steps.
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WGU D426 EXAM 2025\2026 | ALL QUESTIONS AND
CORRECT ANSWERS (ALREADY GRADED A+) | VERIFIED
ANSWERS | LATEST VERSION | WESTERN GOVERNORS
UNIVERSITY
A table is in when all non-key Second normal form
columns
depend on the whole primary
key.
Informally, a table is in Third normal form
_______________when all
non-key
columns depend on the key,
the whole key, and nothing
but the key.
A _ is a simple or composite Candidate key; Minimal
column that
is unique and minimal
______________ means all
columns are necessary for
uniqueness.
A _ column is a column that is Non-key
not
contained in a candidate key.
A table is in if, whenever a Third normal form
non-key
column A depends on
column B, then B is unique.
Columns A and B may be
simple or composite.
A table is in if, whenever Boyce-Codd Normal Form
column A (gold standards of table design)
depends on column B, then B This definition is identical to 3NF except the term 'non-key' is
is unique. removed.
Columns A and B may be
simple or composite.
… 1/1
3
, 5/29/25, 9:21 PM WGU D426 EXAM 2025 | ALL QUESTIONS AND CORRECT ANSWERS (ALREADY GRADED A+) | VERIFIED ANSWERS | LATE…
____ eliminates redundancy Normalization
by decomposing a table into
two or more tables in higher
normal form.
Column A Column B when Depends on
each B value
is related to at most one A
value. A and B may be
simple or composite
columns.
In a table, if column A Boyce-Codd Normal Form
depends on
column B, then B must be
unique.
____ means intentionally Denormalization
introducing redundancy by
merging tables.
A _ is a scheme for organizing Table structure
rows in
blocks on storage media.
In a , no order is imposed on Heap table
rows.
In a , the database designer Sorted table; sort column
identifies a
_ that determines physical
row order.
In a , rows are assigned to Hash table
buckets.
A _ is a block or group of Bucket
blocks
containing rows.
The is a column or group of Hash key
columns,
usually the primary key.
The computes the bucket Hash function
containing
the row from the hash key.
The is a simple hash function Modulo function
with four
steps.
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3
