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






2. A collection of relations






3. The most common form of a join






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






5. 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






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






7. 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






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






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






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






11. 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






12. A characteristic or property of an entity






13. A Characteristic or property of an entity






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






15. 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.






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






17. The field on which data are sorted






18. What type of an operator is >= ?






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






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






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






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






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






24. The portion of the system catalog that contains index information






25. A query in SQL that appears within another






26. An association between entities






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






28. A statement the can be either true or false. Also called a condition






29. A condition that involves only a single field and a single value






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






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






32. To indicate the table (relation) of which a given column (attribute) is a part by preceding the column name with the table name.






33. 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






34. 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






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






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






37. A collection of relations






38. The table obtained by concatenating every row in the first table with every row in the second table






39. 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






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






41. Additional information required by an action in a data macro to complete the action






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






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






44. In Access the query that updates the contents of a table






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






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






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






48. An action that automatically occurs in response to an associated database operation such as INSERT or UPDATE or DELETE






49. The query that is used to define the structure of a viewk






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