Test your basic knowledge |

Database Fundamentals

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. Combination of criteria in which both criteria must be true






2. A graphic model for database design in which entities are represented as rectangles and relationships are represented as either arrows or diamonds connected to the entities they relate






3. A structure that can store information about multiple types of entities - the attributes of these entities and the relationships among those entities






4. The form of a join in which all records appear - even if they don't match






5. A characteristic or property of an entity






6. A program or a collection of programs through which users interact with a database






7. A file used to store data about a single entity. Such a file can be thought of as a table.






8. A relationship between two entities in which each occurrence of the first entity is related to many occurrences of the second entity and each occurrence of the second entity is related to or at most one occurrence of the first entity






9. An access tool that provides documentation about the objects in a database






10. The prevention of unauthorized access to a database






11. The process of determining the content and structure of data in a database in order to support some activity on behalf of a user or group of users






12. A structure that satisfies the properties required to be a relation with the exception of allowing repeating groups






13. A field whose value is computed from other fields in the database






14. Duplication of data or the storing of the same data in more than one place.






15. When sorting on two fields this is the more important field






16. A very popular relational data definition and manipulation language that is used in many relational DBMS's






17. More than one entry at a single location in a table






18. Two simple criteria in a query the are combined with the AND or OR operators






19. Two simple criteria in a query the are combined with the AND or OR operators






20. A source of data - usually stored in hidden database tables - about the types of entities or attributes and relationships in a database






21. An update option in which related records are automatically updated






22. An index built on a single field






23. The process of arranging rows in a table or results of a query in a particular order






24. A relationship between two entities in which each occurrence of the first entity is related to many occurrences of the second entity and each occurrence of the second entity is related to or at most one occurrence of the first entity






25. The SQL command that creates an index in a table






26. An association between entities






27. The individual or group that is responsible for a database






28. A field whose value is computed from other fields in the database






29. A minimal collection of columns (attributes) in a table on which all columns are functionally dependent and that is chosen as the main direct-access vehicle to individual rows.






30. When comparing tables an intersection is a new table containing all rows that are in both original tables






31. Duplication of data or the storing of the same data in more than one place.






32. A data value meaning "unknown" or "not applicable"






33. A field whose value is computed from other fields in the database






34. The relational algebra command to select rows from a table






35. The portion of the Query Design window in Access where you enter fields or criteria or sort orders and so on






36. A combination of two tables consisting of all records that are in either table






37. The SQL command that is used to change the structure of a table






38. A relational data manipulation language in which new tables are created from existing tables through the use of a set of operations






39. A screen object you use to maintain or view and print data from a database






40. A file used to store data about a single entity. Such a file can be thought of as a table.






41. A database has integrity if the data in it satisfies all established integrity constraints






42. A graphic model for database design in which entities are represented as rectangles and relationships are represented as either arrows or diamonds connected to the entities they relate






43. An access query that creates a table using the results of a query






44. The property that lets you change the structure of a database without requiring you to change the programs that access the database






45. The relational algebra command used to select columns from a table






46. A question the answer to which is found in the database






47. A computer that provides services to the clients in a client/server system






48. The relational algebra command that combines tables and searches for rows in the first table that match all rows in the second table






49. The column on which two tables are joined






50. The individual who is responsible for a database or the head of database administration