Test your basic knowledge |

Data Warehousing

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The operational systems - data warehouse and data marts






2. A tool that allows users to write queries without having to learn SQL






3. Second stage of building a data mart






4. Issues to consider when deciding EDW architecture: 1. Which database management system (DBMS) should be used? (ex: Crash Data" MS SQL) 2. Will ______________________ be used? 3. Will data migration tools be used to load the data warehouse?4. What too






5. simplest and least costly architecture developed to operate independently of each other - poor solution






6. A schema where dimensions may be connected to facts or to other dimensions






7. Third stage of the data warehouse data architecture design process






8. First stage of the data warehouse data architecture design process






9. The level of detail required for a fact to be useful






10. A group of related fact tables






11. Tables containing summary records calculated from the main fact tables






12. Data about the data






13. Extract - Load and Transform






14. Draws data from a data warehouse






15. Requesting more information about a particular fact






16. Second stage of the data warehouse data architecture design process






17. An operational system that provides data for a business information system






18. Dimensions which are shared by two or more facts






19. Allows multiple CPUs to process multiple queries simultaneously - providing scalability.






20. Import data into a new database






21. A synonym for Business Intelligence






22. Most famous data warehouse where a maintable infastructure includes a centralized data warehouse that serves for the needs of all organizational units (most favored 39 percent)






23. A computer system used to support the day-to-day operations of an organisation






24. Take data from a source system






25. Data accessible to the whole data warehouse






26. A group of conformed dimensions






27. A daily snapshot for each day of a set period






28. A database table that maps (e.g.) manufacturing product IDs to sales product IDs






29. Extract - Transform and Load






30. Draws data from operational or external systems






31. A report created by an IT department user






32. Fourth stage of building a data mart






33. First stage of building a data mart






34. Splitting data tables into smaller tables for efficient access.






35. The business applications






36. Unlike independent data marts the marts are linked via middleware






37. These extend BI into automating and optimising processes






38. A single low-level fact representing a single business operation






39. Business applications - methods and tools that support the caputre and use of master data






40. Requesting information about related facts






41. A system that allows people to access and analyse data for business management and performance improvement






42. Fifth stage of building a data mart






43. Make changes to data so that it is compatible with a new database






44. Online Analytical Processing






45. A simplified form of a data warehouse supporting the work of a single line of business






46. A visual display of the most important information needed by a particular user






47. All database architectural fall into one of these two categories: EDW or _________ (independent data marts - data mart bus architecture - hub and spoke architecture - centralized data warehouse - federated data warehouse)






48. A logical design technique that presents data in a way that is optimised for high-performance access






49. A table containing foreign keys and values






50. A query created by a BI user