WGU D427 DATABASE MANAGEMENT
APPLICATIONS SQL REVIEW 2026
QUESTIONS WITH SOLUTIONS TESTED
QUESTIONS.
▶ Database system. Answer: An organization of components that
defines and regulates the collection, storage, management, and use of
data in a database environment.
▶ Desktop database. Answer: A single-user database that runs on a
personal computer.
▶ Field. Answer: An alphabetic or numeric character or group of
characters that defines a characteristic of a person, place, or thing. For
example, a person's Social Security number, address, phone number,
and bank balance are all constitute fields.
▶ File. Answer: A named collection of related records.
▶ General-purpose databases. Answer: A database that contains a
wide variety of data used in multiple disciplines.
▶ Hub. Answer: A warehouse of data packets housed in a central
location on a local area network. It contains multiple ports that copy
,the data in the data packets to make it accessible to selected or all
segments of the network.
▶ Information. Answer: The result of processing raw data to reveal
its meaning. Information consists of transformed data and facilitates
decision making.
▶ Knowledge. Answer: The body of information and facts about a
specific subject. Knowledge implies familiarity, awareness, and
understanding of information as it applies to an environment. A key
characteristic is that new knowledge can be derived from old
knowledge.
▶ 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.
▶ Operational database. Answer: A database designed to primarily
support a company's day-to-day operations. Also known as a
transactional database, OLTP database, or production database.
▶ Record. Answer: A collection of related (logically connected)
fields.
▶ Semistructured data. Answer: Data that has already been
processed to some extent.
, ▶ Structural dependence. Answer: A data characteristic in which a
change in the database schema affects data access, thus requiring
changes in all access programs.
▶ Structural independence. Answer: A data characteristic in which
changes in the database schema do not affect data access.
▶ Structured data. Answer: Data that has been formatted to facilitate
storage, use, and information generation.
▶ Unstructured data. Answer: Data that exists in its original, raw
state; that is, in the format in which it was collected.
▶ Workgroup database. Answer: A multiuser database that usually
supports fewer than 50 users or is used for a specific department in an
organization.
▶ XML database. Answer: A database system that stores and
manages semistructured XML data.
▶ Abstract data type (ADT). Answer: Data type that describes a set
of similar objects with shared and encapsulated data representation
and methods. An abstract data type is generally used to describe
complex objects.
▶ Application programming interface (API). Answer: Software
through which programmers interact with middleware. An API allows
APPLICATIONS SQL REVIEW 2026
QUESTIONS WITH SOLUTIONS TESTED
QUESTIONS.
▶ Database system. Answer: An organization of components that
defines and regulates the collection, storage, management, and use of
data in a database environment.
▶ Desktop database. Answer: A single-user database that runs on a
personal computer.
▶ Field. Answer: An alphabetic or numeric character or group of
characters that defines a characteristic of a person, place, or thing. For
example, a person's Social Security number, address, phone number,
and bank balance are all constitute fields.
▶ File. Answer: A named collection of related records.
▶ General-purpose databases. Answer: A database that contains a
wide variety of data used in multiple disciplines.
▶ Hub. Answer: A warehouse of data packets housed in a central
location on a local area network. It contains multiple ports that copy
,the data in the data packets to make it accessible to selected or all
segments of the network.
▶ Information. Answer: The result of processing raw data to reveal
its meaning. Information consists of transformed data and facilitates
decision making.
▶ Knowledge. Answer: The body of information and facts about a
specific subject. Knowledge implies familiarity, awareness, and
understanding of information as it applies to an environment. A key
characteristic is that new knowledge can be derived from old
knowledge.
▶ 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.
▶ Operational database. Answer: A database designed to primarily
support a company's day-to-day operations. Also known as a
transactional database, OLTP database, or production database.
▶ Record. Answer: A collection of related (logically connected)
fields.
▶ Semistructured data. Answer: Data that has already been
processed to some extent.
, ▶ Structural dependence. Answer: A data characteristic in which a
change in the database schema affects data access, thus requiring
changes in all access programs.
▶ Structural independence. Answer: A data characteristic in which
changes in the database schema do not affect data access.
▶ Structured data. Answer: Data that has been formatted to facilitate
storage, use, and information generation.
▶ Unstructured data. Answer: Data that exists in its original, raw
state; that is, in the format in which it was collected.
▶ Workgroup database. Answer: A multiuser database that usually
supports fewer than 50 users or is used for a specific department in an
organization.
▶ XML database. Answer: A database system that stores and
manages semistructured XML data.
▶ Abstract data type (ADT). Answer: Data type that describes a set
of similar objects with shared and encapsulated data representation
and methods. An abstract data type is generally used to describe
complex objects.
▶ Application programming interface (API). Answer: Software
through which programmers interact with middleware. An API allows
