WGU C175/D426 DATA MANAGEMENT
FOUNDATIONS FINAL EXAM STUDY GUIDE
2025/2026 | COMPLETE QUESTIONS |
VERIFIED ANSWERS | GRADED A + | PASS
GUARANTEED | RECENT UPDATE
Summarization Rules - ANSWER Descriptive - maps data into subsets with
associated simple descriptions or generalizations.
Time Series Analysis - ANSWER Predictive - analysis information over time to
predict future data
* in the SELECT clause - ANSWER It indicates that all attributes of the
selected row are to be retrieved.
AND operator - ANSWER It displays a record if more than one condition is
true.
AVG() function - ANSWER It returns the average value of a numeric column.
BETWEEN operator - ANSWER It allows you to specify a range of numeric
values in a search.
, Data definition - ANSWER It is operationalized with a data definition language
(DDL), which involves instructing the DBMS software on what tables will be in
the database, what attributes will be in the tables, which attributes will be indexed,
and so forth.
Data management - ANSWER There are two aspects of data management: data
definition and data manipulation.
DISTINCT operator - ANSWER It is used to eliminate duplicate rows in a
query result.
IN operator - ANSWER It allows you to specify a list of character strings to be
included in a search.
JOIN clause - ANSWER It is used to combine rows from more than one table,
based on a common field between them.
LIKE operator - ANSWER It allows you to specify partial character strings in a
"wildcard" sense.
OR operator - ANSWER It displays a record if either the first condition OR the
second condition is true.
ORDER BY clause - ANSWER It simply takes the results of a SQL query and
orders them by one or more specified attributes.
,SELECT command - ANSWER Data retrieval in SQL is accomplished with the
SELECT command.
Structured Query Language - ANSWER It is a standard language for data
management in relational databases, known as Structured Query Language or SQL.
Subquery - ANSWER When one SELECT statement is "nested" within another
in a format, it is known as a subquery.
Data - ANSWER Facts gathered together for analysis
Flat Files - ANSWER A file having no internal hierarchy
Hashed Files - ANSWER A file that has been encrypted for security purposes
Heap Files - ANSWER An unsorted set of records
Information - ANSWER The transformation of raw data into useful facts
Punch Card - ANSWER A card that is perforated and can hold commands or
data
Structured Data - ANSWER Information with a high degree of organization
, Unstructured Data - ANSWER Information that does not have structure (such
as text)
ETL process - ANSWER Get the data from the source location.
Map the data from its original form into a data model that is suitable for
manipulation at the staging area.
Validate and clean the data.
Apply any transformations to the data that are required before the data sets are
loaded into the repository.
Map the data from its staging area model to its loading model.
Move the data set to the repository.
Load the data into the warehouse.
Estimation - ANSWER It is a process of assigning some continuously valued
numeric value to an object.
Description - ANSWER It is the process of trying to characterize what has been
discovered or trying to explain the results of the data mining process.
Affinity grouping - ANSWER It is a process of evaluating relationships or
associations between data elements.
Crow's Foot notation ERDs - ANSWER When designing a new database
structure based on the business requirements of the end users, the database
designer will construct a data model using a technique such as Crow's Foot
notation ERDs.
FOUNDATIONS FINAL EXAM STUDY GUIDE
2025/2026 | COMPLETE QUESTIONS |
VERIFIED ANSWERS | GRADED A + | PASS
GUARANTEED | RECENT UPDATE
Summarization Rules - ANSWER Descriptive - maps data into subsets with
associated simple descriptions or generalizations.
Time Series Analysis - ANSWER Predictive - analysis information over time to
predict future data
* in the SELECT clause - ANSWER It indicates that all attributes of the
selected row are to be retrieved.
AND operator - ANSWER It displays a record if more than one condition is
true.
AVG() function - ANSWER It returns the average value of a numeric column.
BETWEEN operator - ANSWER It allows you to specify a range of numeric
values in a search.
, Data definition - ANSWER It is operationalized with a data definition language
(DDL), which involves instructing the DBMS software on what tables will be in
the database, what attributes will be in the tables, which attributes will be indexed,
and so forth.
Data management - ANSWER There are two aspects of data management: data
definition and data manipulation.
DISTINCT operator - ANSWER It is used to eliminate duplicate rows in a
query result.
IN operator - ANSWER It allows you to specify a list of character strings to be
included in a search.
JOIN clause - ANSWER It is used to combine rows from more than one table,
based on a common field between them.
LIKE operator - ANSWER It allows you to specify partial character strings in a
"wildcard" sense.
OR operator - ANSWER It displays a record if either the first condition OR the
second condition is true.
ORDER BY clause - ANSWER It simply takes the results of a SQL query and
orders them by one or more specified attributes.
,SELECT command - ANSWER Data retrieval in SQL is accomplished with the
SELECT command.
Structured Query Language - ANSWER It is a standard language for data
management in relational databases, known as Structured Query Language or SQL.
Subquery - ANSWER When one SELECT statement is "nested" within another
in a format, it is known as a subquery.
Data - ANSWER Facts gathered together for analysis
Flat Files - ANSWER A file having no internal hierarchy
Hashed Files - ANSWER A file that has been encrypted for security purposes
Heap Files - ANSWER An unsorted set of records
Information - ANSWER The transformation of raw data into useful facts
Punch Card - ANSWER A card that is perforated and can hold commands or
data
Structured Data - ANSWER Information with a high degree of organization
, Unstructured Data - ANSWER Information that does not have structure (such
as text)
ETL process - ANSWER Get the data from the source location.
Map the data from its original form into a data model that is suitable for
manipulation at the staging area.
Validate and clean the data.
Apply any transformations to the data that are required before the data sets are
loaded into the repository.
Map the data from its staging area model to its loading model.
Move the data set to the repository.
Load the data into the warehouse.
Estimation - ANSWER It is a process of assigning some continuously valued
numeric value to an object.
Description - ANSWER It is the process of trying to characterize what has been
discovered or trying to explain the results of the data mining process.
Affinity grouping - ANSWER It is a process of evaluating relationships or
associations between data elements.
Crow's Foot notation ERDs - ANSWER When designing a new database
structure based on the business requirements of the end users, the database
designer will construct a data model using a technique such as Crow's Foot
notation ERDs.
