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. Fourth stage of building a data mart






2. Draws data from operational or external systems






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






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






5. The operational systems - data warehouse and data marts






6. Data accessible to the whole data warehouse






7. A schema where dimensions are only connected to facts






8. A summary record for a specific reporting period






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






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






11. First stage of building a data mart






12. An alternative term for a data warehouse






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






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






15. 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)






16. Requesting information about related facts






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






18. A report created by an IT department user






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






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






21. Draws data from a data warehouse






22. The business applications






23. Extract - Load and Transform






24. A group of related fact tables






25. Used to support day-to-day operations






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






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






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






29. Look-up tables referred to by fact tables






30. 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






31. Take data from a source system






32. A synonym for Business Intelligence






33. A group of conformed dimensions






34. Second stage of building a data mart






35. Fourth stage of the data warehouse data architecture design process






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






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






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






39. Online Analytical Processing






40. A query created by a BI user






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






42. Fifth stage of building a data mart






43. These extend BI into automating and optimising processes






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






45. Third stage of building a data mart






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






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






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






49. Data about the data






50. Requesting more information about a particular fact