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 portion of the system catalog that contains view information






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






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






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






5. The clause in a SQL CREATE TABLE or ALTER TABLE command that specifies referential integrity






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






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






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






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






10. What type of an operator is >= ?






11. The field on which data are sorted






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






13. The field on which data are sorted






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






15. The SQL command that creates an index in a table






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






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






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






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






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






21. A word that is part of the SQL language






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






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






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






25. 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






26. An update option in which related records are automatically updated






27. The part of an SQL SELECT command that indicates grouping






28. The part of an SQL SELECT command that restricts the groups to be displayed






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






30. 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






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






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






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






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






35. An index built on a single field






36. 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






37. The part of an SQL SELECT command that indicates the columns to be included in the query results






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






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






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






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






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






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






44. The most common form of a join






45. A Characteristic or property of an entity






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






47. A characteristic or property of an entity






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






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






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