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






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






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






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






5. A computer that provides services to the clients in a client/server system






6. 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






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






8. An action that automatically occurs in response to an associated database operation such as INSERT or UPDATE or DELETE






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






10. The part of an SQL SELECT command that indicates the condition rows must satisfy to be displayed in the query results






11. An association between entities






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






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






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






15. A Characteristic or property of an entity






16. A structure that contains information about the objects (tables or columns or indexes or views and so on) in a database






17. An association between entities






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






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






20. The rule that if table A contains a foreign key that matches the primary key of table B then the value of this foreign key must either match the value of the primary key for some row in table B or be null






21. The plural of Criterion






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






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






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






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






26. 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






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






28. An instruction by a user that directs a database to perform a certain way






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






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






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






32. The SQL command that drops (deletes) a table from a database






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






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






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






36. When comparing tables the set of all rows that are in the first table but that are not in the second table






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






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






39. The most common form of a join






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






41. The most common form of a join






42. 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






43. A word that is part of the SQL language






44. 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






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






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






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






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






49. The field on which data are sorted






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