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






2. The SQL clause that is used in a CREATE TABLE or ALTER TABLE command to set a table's primary key field(s)






3. 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






4. 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






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






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






7. 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.






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






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






10. A question the answer to which is found in the database






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






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






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






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






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






16. 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






17. A characteristic or property of an entity






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






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






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






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






22. 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.






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






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






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






26. An association between entities






27. 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






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






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. An index built on a single field






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






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






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






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






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






36. A characteristic or property of an entity






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






38. A word that is part of the SQL language






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






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






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






42. A Characteristic or property of an entity






43. A rule in Access that data entered in a field must satisfy






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






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






46. 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






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






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






49. A data manipulation language for relational databases in which users indicate the action to be taken by completing on-screen forms






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







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