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






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






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






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






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






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






7. 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






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






9. The field on which data are sorted






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






11. 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






12. An index built on a single field






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






14. A word that is part of the SQL language






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






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






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






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






19. A file used to store data about a single entity. Such a file can be thought of as a table.






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






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






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






23. An index built on more than one field






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






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






26. A characteristic or property of an entity






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






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






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






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






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






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






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






34. 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






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






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






38. 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






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






40. A question the answer to which is found in the database






41. The most common form of a join






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






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






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






45. 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






46. A Characteristic or property of an entity






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






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






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






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







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