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






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






3. A collection of relations






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






5. The column on which two tables are joined






6. 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.






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






8. A characteristic or property of an entity






9. A Characteristic or property of an entity






10. 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






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






12. A Characteristic or property of an entity






13. An index built on more than one field






14. When sorting on two fields - the less important field






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






16. What type of an operator is >= ?






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






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






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






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






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






22. The SQL command used to add new data to a table






23. A Characteristic or property of an entity






24. The prevention of unauthorized access to a database






25. 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






26. The SQL statement that is used to revoke privileges from users of a database






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






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






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






30. 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






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






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






33. An association between entities






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






35. 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






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






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






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






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






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






41. A query in SQL that appears within another






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






43. The area of memory in MySQL that stores the most recently entered command






44. The SQL command that drops (deletes) a table from a database






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






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






47. A word that is part of the SQL language






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






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






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