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






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






3. A query in SQL that appears within another






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






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






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






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






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






9. A collection of relations






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






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






12. The prevention of unauthorized access to a database






13. The field on which data are sorted






14. A characteristic or property of an entity






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






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






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






18. An association between entities






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






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






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






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






23. A two-dimensional table-style collection of data in which all entries are single-valued - each column has a distinct name and all the values in a column are values of the attribute that is identified by the column name - and the order of the columns






24. The column on which two tables are joined






25. What type of an operator is >= ?






26. An index built on a single field






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






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






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






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






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






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






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






34. The SQL command that is used to change the structure of a table






35. The prevention of unauthorized access to a database






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






37. The portion of the system catalog that contains index information






38. 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






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






40. A database has integrity if the data in it satisfies all established integrity constraints






41. 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






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






43. A data value meaning "unknown" or "not applicable"






44. The most common form of a join






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






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






47. The SQL statement that is used to revoke privileges from users of a database






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






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






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