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 query in SQL that appears within another






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






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






4. 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






5. In Access the query that updates the contents of a table






6. 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.






7. An association between entities






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






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






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






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






12. A collection of relations






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






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






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






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






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






18. 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






19. 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






20. An access query that creates a table using the results of a query






21. A characteristic or property of an entity






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






23. 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






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






25. The relational algebra command used to select columns from a table






26. A characteristic or property of an entity






27. 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






28. A Characteristic or property of an entity






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






30. A collection of relations






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






32. A word that is part of the SQL language






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






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






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






36. 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






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






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






39. 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






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






41. 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






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






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






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






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






46. 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






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






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






49. An index built on more than one field






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