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. Third stage of the data warehouse data architecture design process






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






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






4. Import data into a new database






5. Data about the data






6. A group of related fact tables






7. The operational systems - data warehouse and data marts






8. A query created by a BI user






9. Second stage of building a data mart






10. A schema where dimensions are only connected to facts






11. Draws data from operational or external systems






12. Draws data from a data warehouse






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






14. Online Analytical Processing






15. A synonym for Business Intelligence






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






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






18. 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)






19. Data accessible to the whole data warehouse






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






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






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 daily snapshot for each day of a set period






24. First stage of building a data mart






25. A table containing foreign keys and values






26. Fourth stage of building a data mart






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






28. 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






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






30. Fifth stage of building a data mart






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






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






33. An alternative term for a data warehouse






34. Extract - Load and Transform






35. These extend BI into automating and optimising processes






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






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






38. Take data from a source system






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






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






41. A report created by an IT department user






42. A summary record for a specific reporting period






43. Requesting information about related facts






44. The business applications






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






46. Extract - Transform and Load






47. Dimensions which are shared by two or more facts






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






49. A group of conformed dimensions






50. Third stage of building a data mart