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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. The relational algebra command to select rows from a table






2. 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






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






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






5. The SQL command used to delete a table






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






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






8. A message in Access that is displayed when a validation rule is violated






9. A Characteristic or property of an entity






10. A characteristic or property of an entity






11. The field on which data are sorted






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






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






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






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






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






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






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






19. A relational data manipulation language in which new tables are created from existing tables through the use of a set of operations






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






21. A query in SQL that appears within another






22. The part of an SQL SELECT command that indicates a sort order






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






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






25. The prevention of unauthorized access to a database






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






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






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






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






30. 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






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






32. A combination of criteria in which at least on the criteria must be true






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






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






35. A data manipulation language for relational databases in which users indicate the action to be taken by completing on-screen forms






36. 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






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






38. The SQL command used to describe the layout of a table. The word table is followed by the name of the table to be created and then by the names and data types of the column (fields) that comprise the table






39. 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.






40. A collection of relations






41. The portion of the Query Design window in Access where you enter fields or criteria or sort orders and so on






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






43. A characteristic or property of an entity






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






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






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






47. The portion of the Query Design window in Access where you enter fields or criteria or sort orders and so on






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






49. The table obtained by concatenating every row in the first table with every row in the second table






50. A word that is part of the SQL language







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