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






2. A collection of actions in Access that are performed in response to an associated database operation - such as inserting or updating or deleting records.






3. The prevention of unauthorized access to a database






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






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






6. 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






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






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






9. A characteristic or property of an entity






10. The column on which two tables are joined






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






12. 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






13. The SQL command used to delete a table






14. An association between entities






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






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






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






18. A characteristic or property of an entity






19. 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






20. 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






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






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






23. An association between entities






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






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






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






27. 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.






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






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






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






31. The part of an SQL SELECT command that indicates the condition rows must satisfy to be displayed in the query results






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






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






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






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






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






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






38. A query in SQL that appears within another






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






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






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






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






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






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






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






46. An index built on more than one field






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






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






49. A rule in Access that data entered in a field must satisfy






50. 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