What are typical use cases for data integration?多项选择题

题目图片
A

a. Business intelligence

B

b. Single view of customer

C

c. Regulatory compliance

D

d. Performance monitoring

E

e. Data backup

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Identify the preprocessing steps necessary for integrating multiple data sources: (Select all that apply)

Which one of these statements explains what data integration is?

Question at position 6 The following example is based on Dong & Srivastava (2015). Given two data sources with the following information: Data source 1 models flight departure and arrival time with the relation: Flight(FlightNumber, DepartureTime, ArrivalTime) Data source 2 models flight departure and arrival time with the relation: Flight(FlightNumber, Type, Time) where Type is either "departure" or "arrival". This is an example of which of the following?Semantic ambiguityInstance representation ambiguityData inconsistencyNone of the above.

Question at position 4 According to lecture, data integration often requires which of the following?Defining a standard or common data modelTransforming data into a common modelCombining data at the schema levelCombining data at the record levelAll of the above

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