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. A group of conformed dimensions






2. Look-up tables referred to by fact tables






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






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






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






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






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






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






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






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






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






12. A query created by a BI user






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






14. Second stage of building a data mart






15. Extract - Load and Transform






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






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






18. Fourth stage of building a data mart






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






20. The operational systems - data warehouse and data marts






21. Data about the data






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






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






24. A schema where dimensions are only connected to facts






25. Take data from a source system






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






27. The business applications






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






29. An alternative term for a data warehouse






30. Fifth stage of building a data mart






31. A report created by an IT department user






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






33. A synonym for Business Intelligence






34. Draws data from operational or external systems






35. Third stage of building a data mart






36. Requesting more information about a particular fact






37. A table containing foreign keys and values






38. 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)






39. Import data into a new database






40. A group of related fact tables






41. 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






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






43. Dimensions which are shared by two or more facts






44. Extract - Transform and Load






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






46. First stage of building a data mart






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






48. Requesting information about related facts






49. 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)






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