In data virtualization architecture, app server works at which of the following layers?

Which of the following Options is NOT a disadvantage of data warehouse (DWH)?

Generally six approaches are used for data integration problem: manual integration, common user interface, integration by applications, integration by middleware, uniform data access and common data storage. Which of the following systems use all the six integration approaches simultaneously?

Can database servers be used for data transformation?

Which of the following is an example of the common data storage approach toward data integration problem?

Which Of the following can be used in order to access virtualized data? 1. Enterprise service bus 2. Object-relational mapper 3. Dedicated data virtualization server

Which of the following are the benef‌its of data abstraction?

Which of the following options fall under communication-driven DSS?

Which of the following factors make the application of data visualization highly recommended?

In business intelligence architecture, integrated data is stored in which of the following data stores?

Which of the following statements is/are correct about data federation technology?