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






2. A Characteristic or property of an entity






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






4. An index built on a single field






5. A characteristic or property of an entity






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






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






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






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






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






11. The SQL command used to delete a table






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






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






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






15. 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






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






17. 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






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






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






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






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






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






23. 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






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






25. Additional information required by an action in a data macro to complete the action






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






27. 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.






28. A collection of relations






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






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






31. 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






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






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






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






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






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






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






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






39. An index built on more than one field






40. The part of an SQL SELECT command that indicates a sort order






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






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






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






44. The prevention of unauthorized access to a database






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






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






47. The plural of Criterion






48. The rule that no column (attribute) that is part of the primary key may accept null values






49. The SQL clause that is used in a CREATE TABLE or ALTER TABLE command to set a table's primary key field(s)






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