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. Unlike independent data marts the marts are linked via middleware






2. A table containing foreign keys and values






3. Import data into a new database






4. Draws data from a data warehouse






5. First stage of building a data mart






6. The business applications






7. The operational systems - data warehouse and data marts






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






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






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






11. A query created by a BI user






12. Requesting more information about a particular fact






13. A schema where dimensions are only connected to facts






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






15. 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






16. Draws data from operational or external systems






17. Take data from a source system






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






19. Requesting information about related facts






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






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






22. Fourth stage of building a data mart






23. A report created by an IT department user






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






25. 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)






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






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






28. Data accessible to the whole data warehouse






29. A synonym for Business Intelligence






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






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






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






33. Second stage of building a data mart






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






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






36. Third stage of building a data mart






37. 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)






38. Extract - Transform and Load






39. A group of related fact tables






40. A group of conformed dimensions






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






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






43. These extend BI into automating and optimising processes






44. Dimensions which are shared by two or more facts






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






46. Fifth stage of building a data mart






47. Look-up tables referred to by fact tables






48. Used to support day-to-day operations






49. A summary record for a specific reporting period






50. Extract - Load and Transform