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






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






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






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






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






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






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






8. 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






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






10. The prevention of unauthorized access to a database






11. 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






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






13. A characteristic or property of an entity






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






15. A computer that provides services to the clients in a client/server system






16. 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.






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






18. 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






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






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






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






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






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






24. An association between entities






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






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






27. The portion of the system catalog that contains table information






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






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






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






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






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






33. The field on which data are sorted






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






35. An index built on a single field






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






37. 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






38. The prevention of unauthorized access to a database






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






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






41. A word that is part of the SQL language






42. What type of an operator is >= ?






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






44. An association between entities






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






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






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






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






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






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