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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 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






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






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






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






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






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






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






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






9. An index built on a single field






10. 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






11. An association between entities






12. A structure that contains information about the objects (tables or columns or indexes or views and so on) in a database






13. The most common form of a join






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






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






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






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






18. A Characteristic or property of an entity






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






20. An association between entities






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






22. What type of an operator is >= ?






23. The SQL command used to delete a table






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






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






26. The SQL clause that is used in a CREATE TABLE or ALTER TABLE command to set a table's primary key field(s)






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






28. The part of an SQL SELECT command that indicates the columns to be included in the query results






29. 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






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






31. An index built on more than one field






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






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






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






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






36. A Characteristic or property of an entity






37. The prevention of unauthorized access to a database






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






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






40. 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.






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






42. A characteristic or property of an entity






43. A query that deletes all records that satisfy some criterion






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






45. 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






46. A condition that involves only a single field and a single value






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






48. 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






49. 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






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







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