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






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






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






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






5. A characteristic or property of an entity






6. In an Access query the line drawn between tables to indicate how they are related






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






8. 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






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






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






11. An application program's or an individual user's picture of a database






12. 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






13. 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






14. An index built on more than one field






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






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






17. The portion of the system catalog that contains table information






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






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






20. The SQL command used to delete a table






21. 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






22. A collection of relations






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






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






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






26. The prevention of unauthorized access to a database






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






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






29. 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






30. 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






31. A very popular relational data definition and manipulation language that is used in many relational DBMS's






32. A characteristic or property of an entity






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






34. A collection of relations






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






36. 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






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






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






39. The area of memory in MySQL that stores the most recently entered command






40. The plural of Criterion






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






42. An association between entities






43. 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






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






45. The relational algebra command for performing the difference of two tables






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






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






48. The most common form of a join






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






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