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. A characteristic or property of an entity






2. 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.






3. The combination of two or more rows in an operation - such as a join - or the combination of two or more columns for a primary key field to uniquely identify a given row in a table






4. 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






5. An index built on more than one field






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






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






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






9. In an Access query the line drawn between tables to indicate how they are related






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






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






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






13. The portion of the system catalog that contains table information






14. A column (attribute) or collection of columns in a table whose value is required either to match the value of a primary key in a table or to be null






15. The prevention of unauthorized access to a database






16. A function used to calculate the number of entries and the sum or average of all the entries in a given column or the largest or smallest of the entries in a given column






17. 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






18. A characteristic or property of an entity






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






20. The column on which two tables are joined






21. A rule that must be followed by data in a database






22. What type of an operator is >= ?






23. A Characteristic or property of an entity






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






25. Combination of criteria in which both criteria must be true






26. A combination of criteria in which at least on the criteria must be true






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






28. The portion of the system catalog the contains column information






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






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






31. A person or place or object or event or idea for which you want to store and process data






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






33. The SQL command that drops (deletes) and index from a table






34. A data manipulation language for relational databases in which users indicate the action to be taken by completing on-screen forms






35. The prevention of unauthorized access to a database






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






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






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






39. The field on which data are sorted






40. A person or place or object or event or idea for which you want to store and process data






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






42. An association between entities






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






44. The combination of two or more rows in an operation - such as a join - or the combination of two or more columns for a primary key field to uniquely identify a given row in a table






45. The rule that if table A contains a foreign key that matches the primary key of table B then the value of this foreign key must either match the value of the primary key for some row in table B or be null






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






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






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






49. A characteristic or property of an entity






50. Two tables are union compatible if they have the same number of fields and if their corresponding fields have identical data types