Correct Answer
verified
Multiple Choice
A) Is the name spelled correctly?
B) Is the email address invalid?
C) Does the name and the phone values have the exact same information?
D) Is aggregate information in agreement with detailed information?
Correct Answer
verified
Multiple Choice
A) A collection of large, complex data sets, including structured and unstructured data, which cannot be analyzed using traditional database methods and tools.
B) Processes and manages algorithms across many machines in a computing environment.
C) Focuses on forecasting future trends and producing insights using sophisticated quantitative methods, including statistics, descriptive and predictive data mining, simulation, and optimization.
D) Extracts knowledge from data by performing statistical analysis, data mining, and advanced analytics on big data to identify trends, market changes, and other relevant information.
Correct Answer
verified
Multiple Choice
A) A database can be relational or network
B) Database information is accessed by logical structure
C) Database information is accessed by physical structure
D) Database users can have different views of information
Correct Answer
verified
Multiple Choice
A) The time it takes for data to be stored or retrieved.
B) The management and oversight of an organization's data assets.
C) The person responsible for ensuring policies and procedures are implemented across the organization.
D) When a company examines its data to determine if it can meet business expectations, while identifying possible data gaps.
Correct Answer
verified
Multiple Choice
A) Greater accuracy.
B) Completeness and completeness.
C) Increases the quality of information.
D) All of the above.
Correct Answer
verified
True/False
Correct Answer
verified
True/False
Correct Answer
verified
True/False
Correct Answer
verified
True/False
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) Numbers and types of operational databases increased as businesses grew
B) Many companies had information scattered across multiple systems with different formats
C) Completing reporting requests from numerous operational systems took days or weeks
D) All of the above
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) Customer information can exist in several operational systems
B) Customer information in each operational system could change
C) Customer information in each operational system can be different
D) All of the above
Correct Answer
verified
Multiple Choice
A) A business that collects personal information about consumers and sells that information to other organizations.
B) A storage repository that holds a vast amount of raw data in its original format until the business needs it.
C) A technique for establishing a match, or balance, between the source data and the target data warehouse.
D) An approach to business governance that values decisions that can be backed up with verifiable data.
Correct Answer
verified
Multiple Choice
A) It is only available to high-level executives due to the expense
B) It is only available in aggregate levels of granularity
C) It continually changes
D) It rarely changes
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) Clean missing records
B) Clean redundant records
C) Clean inaccurate data
D) All of the above
Correct Answer
verified
Multiple Choice
A) Entity
B) Extraction
C) Attribute
D) Foreign key
Correct Answer
verified
Multiple Choice
A) Data model
B) Data element
C) Data mining tool
D) Data mart tool
Correct Answer
verified
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