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






2. The relational algebra command used to select columns from a table






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






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






5. The column on which two tables are joined






6. 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.






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






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






9. 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






10. The prevention of unauthorized access to a database






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






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






13. A characteristic or property of an entity






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






15. The field on which data are sorted






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






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






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






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






20. An association between entities






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






22. The prevention of unauthorized access to a database






23. The column on which two tables are joined






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






25. An application program's or an individual user's picture of a database






26. An index built on more than one field






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






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






30. A word that is part of the SQL language






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






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






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






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






35. 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






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






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






38. What type of an operator is >= ?






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






40. The SQL command that drops (deletes) and index from a table






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






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






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






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






45. 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






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






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






48. The process of creating collections of records that share some common characteristics






49. The most common form of a join






50. The property that no record can exist in the database with a value in a field other than a legal value