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 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






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






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






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






5. 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






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






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






8. The relational algebra command for performing the intersection of two tables






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






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






11. The rule that no column (attribute) that is part of the primary key may accept null values






12. 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






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






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






15. 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






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






17. A two-dimensional table-style collection of data in which all entries are single-valued - each column has a distinct name and all the values in a column are values of the attribute that is identified by the column name - and the order of the columns






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






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






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






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






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






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






24. The relational algebra command for performing the difference of two tables






25. The column on which two tables are joined






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






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






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






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






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






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






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






33. What type of an operator is >= ?






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






35. 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






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






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






38. An index built on more than one field






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






40. The portion of the system catalog that contains view information






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






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






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






44. 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






45. 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






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






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






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






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






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