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Which of the following enables a DBMS to reduce data redundancy and
inconsistency?
A. Ability to couple program and data
B. Ability to create two-dimensional tables
C. Use of a data dictionary
D. Ability to minimize isolated files with repeated data
E. Ability to enforce referential integrity - CORRECT ANSWER>>>>D. Ability to
minimize isolated files with repeated data
A one-to-many relationship between two entities is symbolized in a diagram by a
line that ends with:
A. one short mark.
B. a crow's foot topped by a short mark.
C. a crow's foot.
D. three short marks.
E. two short marks. - CORRECT ANSWER>>>>B. a crow's foot topped by a short
mark.
The project operation:
A. creates a subset consisting of rows in a table.
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,B. combines relational tables to provide the user with more information than is
otherwise available.
C. creates a subset consisting of columns in a table.
D. identifies the table from which the columns will be selected.
E. organizes elements into segments. - CORRECT ANSWER>>>>C. creates a
subset consisting of columns in a table.
OLAP enables:
A. programmers to normalize data.
B. programmers to quickly diagram data relationships.
C. users to view both logical and physical views of data.
D. users to quickly generate summary reports.
E. users to obtain online answers to ad-hoc questions in a rapid amount of time. -
CORRECT ANSWER>>>>E. users to obtain online answers to ad-hoc
questions in a rapid amount of time.
Data occurs when the same data is duplicated in multiple files of a
database. A. partitions
B. redundancy
C. discrepancy
D. independence
E. repetition - CORRECT ANSWER>>>>B. redundancy
In a large organization, which of the following functions would be responsible for
physical database design and maintenance?
A. Data auditing
B. Information policy administration
C. Database administration
D. Database management
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,E. Data administration - CORRECT ANSWER>>>>C. Database administration
Which of the following is software that handles all application operations between
browser- based computers and a company's back-end business applications or
databases?
A. Application server software
B. Database server software
C. Web browser software
D. Web server software
E. Data mining software - CORRECT ANSWER>>>>A. Application server
software
Detecting and correcting data in a database or file that are incorrect,
incomplete, improperly formatted, or redundant is called: A. data auditing.
B. data normalization.
C. data scrubbing.
D. defragmentation.
E. data optimization. - CORRECT ANSWER>>>>C. data scrubbing.
Which of the following is not a method for performing a data quality audit?
A. Surveying data definition and query files
B. Surveying end users about their perceptions of data quality
C. Surveying samples from data files
D. Surveying managers about their perceptions of data quality
E. Surveying entire data files - CORRECT ANSWER>>>>A. Surveying data
definition and query files
Which of the following is not one of the benefits of a blockchain
database? A. It enables the ability to use relational databases.
B. It allows administrators to manage data more effectively.
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, C. It prevents data from being altered retroactively.
D. It enables firms to create and verify translations on a network very rapidly.
E. It provides users with an integrated view of the data. - CORRECT
ANSWER>>>>D. It enables firms to create and verify translations on a network
very rapidly.
A characteristic or quality that describes a particular database entity is
called a(n): A. key field.
B. relationship.
C. tuple.
D. attribute.
E. field. - CORRECT ANSWER>>>>D. attribute.
A household appliances manufacturer has hired you to help analyze its social
media datasets to determine which of its refrigerators are seen as the most
reliable. Which of the following tools would you use to analyze this data?
A. Web mining technologies
B. Text mining tools
C. Data mining software
D. Data governance software
E. Sentiment analysis software - CORRECT ANSWER>>>>E. Sentiment analysis
software
tools are used to analyze large unstructured data sets, such as email,
memos, and
survey responses to discover patterns and relationships.
A. In-memory
B. Clustering
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