Data Warehousing Transient data is which of the following? Data that are never deleted once they have been added Data that are never altered or deleted once they have been added Data in which changes to existing records do not cause the previous version of the records to be eliminated Data in which changes to existing records cause the previous version of the records to be eliminated Data that are never deleted once they have been added Data that are never altered or deleted once they have been added Data in which changes to existing records do not cause the previous version of the records to be eliminated Data in which changes to existing records cause the previous version of the records to be eliminated ANSWER DOWNLOAD EXAMIANS APP
Data Warehousing Star schema is suited to online transaction processing, and therefore is generally used in operational systems, operational data stores, or an EDW. True False True False ANSWER DOWNLOAD EXAMIANS APP
Data Warehousing Data scrubbing can help upgrade data quality; it is not a long-term solution to the data quality problem. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data Warehousing The generic two-level data warehouse architecture includes which of the following? All of these At least one data mart Near real-time updates Data that can extracted from numerous internal and external sources All of these At least one data mart Near real-time updates Data that can extracted from numerous internal and external sources ANSWER DOWNLOAD EXAMIANS APP
Data Warehousing An operational system is which of the following? A system that is used to run the business in real time and is based on historical data. A system that is used to support decision making and is based on current data. A system that is used to support decision making and is based on historical data. A system that is used to run the business in real time and is based on current data. A system that is used to run the business in real time and is based on historical data. A system that is used to support decision making and is based on current data. A system that is used to support decision making and is based on historical data. A system that is used to run the business in real time and is based on current data. ANSWER DOWNLOAD EXAMIANS APP
Data Warehousing The extract process is which of the following? Capturing a subset of the data contained in various decision support systems Capturing all of the data contained in various operational systems Capturing a subset of the data contained in various operational systems Capturing all of the data contained in various decision support systems Capturing a subset of the data contained in various decision support systems Capturing all of the data contained in various operational systems Capturing a subset of the data contained in various operational systems Capturing all of the data contained in various decision support systems ANSWER DOWNLOAD EXAMIANS APP
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