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






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






3. 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.






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






5. A Characteristic or property of an entity






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






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






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






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






11. The SQL command used to delete a table






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






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






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






15. 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






16. A characteristic or property of an entity






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






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






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






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






21. A column (attribute) or collection of columns in a table whose value is required either to match the value of a primary key in a table or to be null






22. A characteristic or property of an entity






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






24. The part of an SQL SELECT command that indicates the tables in the query






25. 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






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






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






28. 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






29. What type of an operator is >= ?






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






31. An index built on a single field






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






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






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






35. A word that is part of the SQL language






36. A source of data - usually stored in hidden database tables - about the types of entities or attributes and relationships in a database






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






38. The field on which data are sorted






39. 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






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






41. 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






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






43. An index built on more than one field






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






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






46. What type of an operator is >= ?






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






48. 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






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






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