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D 775 / D775 OBJECTIVE ASSESSMENT EXAMS (LATEST
UPDATES STUDY BUNDLE PACKAGE WITH
SOLUTIONS) INTRODUCTION TO BUSINESS FINANCE |
QUESTIONS AND ANSWERS | GRADE A | 100%
CORRECT (VERIFIED ANSWERS) - WGU
Database Application .....ANSWER.....Software that helps
business users interact with database systems.
Database Administrator .....ANSWER.....Responsible for securing
the database system against unauthorized users. A database
administrator enforces procedures for user access and database
system availability.
Authorization .....ANSWER.....Many database users should have
limited access to specific tables, columns, or rows of a database.
Database systems authorize individual users to access specific
data.
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Rules .....ANSWER.....Database systems ensure data is consistent
with structural and business rules.
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.
Storage Manager .....ANSWER.....Translates the query processor
instructions into low-level file-system commands that modify or
retrieve data. Database sizes range from megabytes to many
terabytes, so the storage manager uses indexes to quickly locate
data.
Transaction Manager .....ANSWER.....Ensures transactions are
properly executed. The transaction manager prevents conflicts
between concurrent transactions. The transaction manager also
restores the database to a consistent state in the event of a
transaction or system failure.
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Metadata .....ANSWER.....Data about the database, such as
column names and the number of rows in each table.
Relational Database .....ANSWER.....Stores data in tables,
columns, and rows, similar to a spreadsheet.
Relational Database .....ANSWER.....All _________ ________
systems support the SQL query language.
Relational Database .....ANSWER.....Relational systems are ideal
for databases that require an accurate record of every
transaction, such as banking, airline reservation systems, and
student records.
MongoDB (NoSQL) .....ANSWER.....The newer non-relational
systems are called NoSQL, for 'not only SQL', and are optimized
for big data.
SQL Statements .....ANSWER.....INSERT inserts rows into a table.
SELECT retrieves data from a table.
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UPDATE modifies data in a table.
DELETE deletes rows from a table.
CREATE TABLE (Statement) .....ANSWER.....A statement that
creates a new table by specifying the table and column names.
Each column is assigned a data type that indicates the format of
column values. Data types can be numeric, textual, or complex.
Data Type .....ANSWER.....INT stores integer values.
DECIMAL stores fractional numeric values.
VARCHAR stores textual values.
DATE stores year, month, and day.
Database Design .....ANSWER.....Analysis
Logical design
Physical design
D 775 / D775 OBJECTIVE ASSESSMENT EXAMS (LATEST
UPDATES STUDY BUNDLE PACKAGE WITH
SOLUTIONS) INTRODUCTION TO BUSINESS FINANCE |
QUESTIONS AND ANSWERS | GRADE A | 100%
CORRECT (VERIFIED ANSWERS) - WGU
Database Application .....ANSWER.....Software that helps
business users interact with database systems.
Database Administrator .....ANSWER.....Responsible for securing
the database system against unauthorized users. A database
administrator enforces procedures for user access and database
system availability.
Authorization .....ANSWER.....Many database users should have
limited access to specific tables, columns, or rows of a database.
Database systems authorize individual users to access specific
data.
,Page 2 of 60
Rules .....ANSWER.....Database systems ensure data is consistent
with structural and business rules.
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.
Storage Manager .....ANSWER.....Translates the query processor
instructions into low-level file-system commands that modify or
retrieve data. Database sizes range from megabytes to many
terabytes, so the storage manager uses indexes to quickly locate
data.
Transaction Manager .....ANSWER.....Ensures transactions are
properly executed. The transaction manager prevents conflicts
between concurrent transactions. The transaction manager also
restores the database to a consistent state in the event of a
transaction or system failure.
,Page 3 of 60
Metadata .....ANSWER.....Data about the database, such as
column names and the number of rows in each table.
Relational Database .....ANSWER.....Stores data in tables,
columns, and rows, similar to a spreadsheet.
Relational Database .....ANSWER.....All _________ ________
systems support the SQL query language.
Relational Database .....ANSWER.....Relational systems are ideal
for databases that require an accurate record of every
transaction, such as banking, airline reservation systems, and
student records.
MongoDB (NoSQL) .....ANSWER.....The newer non-relational
systems are called NoSQL, for 'not only SQL', and are optimized
for big data.
SQL Statements .....ANSWER.....INSERT inserts rows into a table.
SELECT retrieves data from a table.
, Page 4 of 60
UPDATE modifies data in a table.
DELETE deletes rows from a table.
CREATE TABLE (Statement) .....ANSWER.....A statement that
creates a new table by specifying the table and column names.
Each column is assigned a data type that indicates the format of
column values. Data types can be numeric, textual, or complex.
Data Type .....ANSWER.....INT stores integer values.
DECIMAL stores fractional numeric values.
VARCHAR stores textual values.
DATE stores year, month, and day.
Database Design .....ANSWER.....Analysis
Logical design
Physical design
