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 characteristic or property of an entity






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






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






4. The plural of Criterion






5. 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






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






7. The plural of Criterion






8. The prevention of unauthorized access to a database






9. 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






10. A Characteristic or property of an entity






11. An index built on more than one field






12. An access tool that provides documentation about the objects in a database






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






14. A characteristic or property of an entity






15. An association between entities






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






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






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






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






20. The field on which data are sorted






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






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






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






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






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






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






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






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






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






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






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






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






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






34. 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






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






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






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






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






39. 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






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






41. A collection of relations






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






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






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






45. 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






46. The SQL command used to describe the layout of a table. The word table is followed by the name of the table to be created and then by the names and data types of the column (fields) that comprise the table






47. The column on which two tables are joined






48. The prevention of unauthorized access to a database






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






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