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






2. A collection of relations






3. 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






4. The field or fields on which an index is built






5. 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.






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






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






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






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






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






11. The field on which data are sorted






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






13. 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.






14. 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






15. An index built on a single field






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






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






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






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






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






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






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






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






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






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






26. An index built on a single field






27. The field on which data are sorted






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






29. 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






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






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






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






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






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






35. 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






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






37. What type of an operator is >= ?






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






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






40. A characteristic or property of an entity






41. A very popular relational data definition and manipulation language that is used in many relational DBMS's






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






43. The plural of Criterion






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






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






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






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






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






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






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