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. The prevention of unauthorized access to a database






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






3. The portion of the system catalog that contains view information






4. The plural of Criterion






5. 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






6. The most common form of a join






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






8. An index built on more than one field






9. The field on which data are sorted






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






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






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






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






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






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






16. The process of determining the content and structure of data in a database in order to support some activity on behalf of a user or group of users






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






18. What type of an operator is >= ?






19. What type of an operator is >= ?






20. The prevention of unauthorized access to a database






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






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






23. The relational algebra command that combines tables and searches for rows in the first table that match all rows in the second table






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






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






26. A characteristic or property of an entity






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






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






29. 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






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






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






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






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






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






35. The most common form of a join






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






37. The plural of Criterion






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






39. 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






40. An index built on a single field






41. A delete option in which related records are automatically deleted






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






43. An index built on a single field






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






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






46. In Access the query that updates the contents of a table






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






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






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






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