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 relational algebra command for performing the difference of two tables






2. 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






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






4. The SQL command used to make changes to existing table data






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






6. A Characteristic or property of an entity






7. 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






8. A punctuation mark - such as a semicolon - that separates pieces of data






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






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






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






12. A view that consists of a subset of the rows and columns in a table






13. A word that is part of the SQL language






14. A delete option in which related records are automatically deleted






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






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






17. 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






18. In relational algebra the operation in which two tables are connected on the basis of common data.






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






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






21. 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






22. The SQL clause that is used to enforce legal-values integrity






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






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






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






26. 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






27. The prevention of unauthorized access to a database






28. A characteristic or property of an entity






29. An index built on a single field






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






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






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






33. When comparing tables the set of all rows that are in the first table but that are not in the second table






34. A characteristic or property of an entity






35. The column on which two tables are joined






36. A Characteristic or property of an entity






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






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






39. A file that relates key values to records that contain those key values






40. An instruction by a user that directs a database to perform a certain way






41. The SQL statement that is used to grant different types of privileges to users of a dataabase






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






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






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






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






46. A file containing a collection of compiled and optimized SQL statements that are available for future use






47. The most common form of a join






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






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






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