1
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WGU D426 - Data Management
Foundations Questions and Answers
(100% Correct Answers) Already Graded
A+
Data[ ANS: ]numeric, textual, visual, or audio information that
describes real-world systems.
© 2025 Assignment Expert
analog[ ANS: ]Historically, data was mostly ______________,
encoded as continuous variations on various physical media.
digital[ ANS: ]Today, data is mostly ______________, encoded as
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zeros and ones on electronic and magnetic media.
database[ ANS: ]a collection of data in a structured format. In
principle, can be stored on paper or even clay tablets. In
practice, however, modern ones are invariably stored on
computers.
database system / database management system / DBMS[ ANS:
]software that reads and writes data in a database. ensure data is
secure, internally consistent, and available at all times. These
functions are challenging for large databases with many users, so
data base systems are complex.
database application[ ANS: ]software that helps business users
interact with database systems.
database administrator[ ANS: ]- responsible for securing the
database system against unauthorized users.
, 2
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- enforces procedures for user access and database system
availability.
database designer[ ANS: ]determines the format of each data
element and the overall database structure. Must balance several
priorities, including storage, response time, and support for rules
that govern the data. Since these priorities often conflict,
database design is technically challenging.
database programmer[ ANS: ]develops computer programs that
utilize a database.
© 2025 Assignment Expert
database user[ ANS: ]- a consumer of data in a database.
request, update, or use stored data to generate reports or
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information.
- usually access the database via applications but can also submit
queries directly to the database system.
transaction[ ANS: ]a group of queries that must be either
completed or rejected as a whole. Execution of some, but not all,
queries results in inconsistent or incorrect data.
query processor[ ANS: ]- interprets queries, creates a plan to
modify the database or retrieve data, and returns query results to
the application.
- manages connections from multiple users and compiles queries
into low-level instructions for the storage engine.
query optimization[ ANS: ]The query processor performs
______________ to ensure the most efficient instructions are
executed on the data.
, 3
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indexes[ ANS: ]used by the storage manager to quickly locate
data.
transaction manager[ ANS: ]ensures transactions are properly
executed.
log[ ANS: ]a file containing a complete record of all inserts,
updates, and deletes processed by the database.
relational database[ ANS: ]stores data in tables, columns, and
rows, similar to a spreadsheet.
© 2025 Assignment Expert
SQL[ ANS: ]includes statements that read and write data, create
and delete tables, and administer the database system.
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big data[ ANS: ]The growth of the internet in the 1990s generated
massive volumes of online data, often with poorly structured or
missing information.
NoSQL[ ANS: ]The newer non-relational systems, for 'not only SQL',
and are optimized for big data.
Open source[ ANS: ]software that anyone can inspect, copy, and
modify with no licensing fee.
query[ ANS: ]a command for a database that typically inserts new
data, retrieves data, updates data, or deletes data from a
database.
query language[ ANS: ]a computer programming language for
writing database queries.
CRUD[ ANS: ]The four common queries are an acronym for
Create, Read, Update, and Delete data.
, 4
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SELECT[ ANS: ]retrieves data from a table.
UPDATE[ ANS: ]modifies data in a table.
CREATE TABLE[ ANS: ]creates a new table by specifying the table
and column names.
data type[ ANS: ]Each column is assigned a ______________ that
indicates the format of column values and can be numeric,
textual, or complex.
© 2025 Assignment Expert
database design[ ANS: ]a specification of database objects such
as tables, columns, data types, and indexes. Also refers to the
process used to develop the specification.
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analysis[ ANS: ]specifies database requirements without regard to
a specific database system.
ER diagrams[ ANS: ]depicts entities, relationships, and attributes.
logical design[ ANS: ]implements database requirements in a
specific database system. specifies tables, columns, and keys.
key[ ANS: ]a column used to identify individual rows of a table.
table diagram[ ANS: ]depicts the logical design.
schema[ ANS: ]The logical design, as specified in SQL and
depicted in a table diagram.
data independence[ ANS: ]The principle that physical design
never affects query results.
For Expert help and assignment solutions, +254707240657
WGU D426 - Data Management
Foundations Questions and Answers
(100% Correct Answers) Already Graded
A+
Data[ ANS: ]numeric, textual, visual, or audio information that
describes real-world systems.
© 2025 Assignment Expert
analog[ ANS: ]Historically, data was mostly ______________,
encoded as continuous variations on various physical media.
digital[ ANS: ]Today, data is mostly ______________, encoded as
Guru01 - Stuvia
zeros and ones on electronic and magnetic media.
database[ ANS: ]a collection of data in a structured format. In
principle, can be stored on paper or even clay tablets. In
practice, however, modern ones are invariably stored on
computers.
database system / database management system / DBMS[ ANS:
]software that reads and writes data in a database. ensure data is
secure, internally consistent, and available at all times. These
functions are challenging for large databases with many users, so
data base systems are complex.
database application[ ANS: ]software that helps business users
interact with database systems.
database administrator[ ANS: ]- responsible for securing the
database system against unauthorized users.
, 2
For Expert help and assignment solutions, +254707240657
- enforces procedures for user access and database system
availability.
database designer[ ANS: ]determines the format of each data
element and the overall database structure. Must balance several
priorities, including storage, response time, and support for rules
that govern the data. Since these priorities often conflict,
database design is technically challenging.
database programmer[ ANS: ]develops computer programs that
utilize a database.
© 2025 Assignment Expert
database user[ ANS: ]- a consumer of data in a database.
request, update, or use stored data to generate reports or
Guru01 - Stuvia
information.
- usually access the database via applications but can also submit
queries directly to the database system.
transaction[ ANS: ]a group of queries that must be either
completed or rejected as a whole. Execution of some, but not all,
queries results in inconsistent or incorrect data.
query processor[ ANS: ]- interprets queries, creates a plan to
modify the database or retrieve data, and returns query results to
the application.
- manages connections from multiple users and compiles queries
into low-level instructions for the storage engine.
query optimization[ ANS: ]The query processor performs
______________ to ensure the most efficient instructions are
executed on the data.
, 3
For Expert help and assignment solutions, +254707240657
indexes[ ANS: ]used by the storage manager to quickly locate
data.
transaction manager[ ANS: ]ensures transactions are properly
executed.
log[ ANS: ]a file containing a complete record of all inserts,
updates, and deletes processed by the database.
relational database[ ANS: ]stores data in tables, columns, and
rows, similar to a spreadsheet.
© 2025 Assignment Expert
SQL[ ANS: ]includes statements that read and write data, create
and delete tables, and administer the database system.
Guru01 - Stuvia
big data[ ANS: ]The growth of the internet in the 1990s generated
massive volumes of online data, often with poorly structured or
missing information.
NoSQL[ ANS: ]The newer non-relational systems, for 'not only SQL',
and are optimized for big data.
Open source[ ANS: ]software that anyone can inspect, copy, and
modify with no licensing fee.
query[ ANS: ]a command for a database that typically inserts new
data, retrieves data, updates data, or deletes data from a
database.
query language[ ANS: ]a computer programming language for
writing database queries.
CRUD[ ANS: ]The four common queries are an acronym for
Create, Read, Update, and Delete data.
, 4
For Expert help and assignment solutions, +254707240657
SELECT[ ANS: ]retrieves data from a table.
UPDATE[ ANS: ]modifies data in a table.
CREATE TABLE[ ANS: ]creates a new table by specifying the table
and column names.
data type[ ANS: ]Each column is assigned a ______________ that
indicates the format of column values and can be numeric,
textual, or complex.
© 2025 Assignment Expert
database design[ ANS: ]a specification of database objects such
as tables, columns, data types, and indexes. Also refers to the
process used to develop the specification.
Guru01 - Stuvia
analysis[ ANS: ]specifies database requirements without regard to
a specific database system.
ER diagrams[ ANS: ]depicts entities, relationships, and attributes.
logical design[ ANS: ]implements database requirements in a
specific database system. specifies tables, columns, and keys.
key[ ANS: ]a column used to identify individual rows of a table.
table diagram[ ANS: ]depicts the logical design.
schema[ ANS: ]The logical design, as specified in SQL and
depicted in a table diagram.
data independence[ ANS: ]The principle that physical design
never affects query results.
