Data Warehousing Every key used to join the fact table with a dimensional table should be a surrogate key. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data Warehousing A data warehouse is which of the following? Contains numerous naming conventions and formats. Organized around important subject areas. Can be updated by end users. Contains only current data. Contains numerous naming conventions and formats. Organized around important subject areas. Can be updated by end users. Contains only current data. ANSWER DOWNLOAD EXAMIANS APP
Data Warehousing Derived data are detailed, current data intended to be the single, authoritative source for all decision support applications. True False True False ANSWER DOWNLOAD EXAMIANS APP
Data Warehousing A star schema has what type of relationship between a dimension and fact table? Many-to-many All of these One-to-many One-to-one Many-to-many All of these One-to-many One-to-one ANSWER DOWNLOAD EXAMIANS APP
Data Warehousing An operational system is which of the following? A system that is used to support decision making and is based on current 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 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 historical data. A system that is used to support decision making and is based on current 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 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 historical data. ANSWER DOWNLOAD EXAMIANS APP
Data Warehousing Transient data is which of the following? 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 in which changes to existing records do not cause the previous version of the records to be eliminated Data that are never altered or deleted once they have been added 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 in which changes to existing records do not cause the previous version of the records to be eliminated Data that are never altered or deleted once they have been added ANSWER DOWNLOAD EXAMIANS APP
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