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 satisfies the properties required to be a relation with the exception of allowing repeating groups






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






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






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






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






6. The relational algebra command to select rows from a table






7. 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






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






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






10. A characteristic or property of an entity






11. A relational data manipulation language in which new tables are created from existing tables through the use of a set of operations






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






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






14. 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






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






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






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






18. A collection of relations






19. 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.






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






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






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






23. A view that consists of a subset of the rows and columns in a table






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






25. 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






26. The prevention of unauthorized access to a database






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






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






29. 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






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






31. 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






32. 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






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






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






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






36. An association between entities






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






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






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






40. The plural of Criterion






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






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






43. A characteristic or property of an entity






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






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






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






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






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






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






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