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. Combination of criteria in which both criteria must be true






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






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






4. The prevention of unauthorized access to a database






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






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






7. 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






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






9. The SQL command used to make changes to existing table data






10. A collection of relations






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






12. What type of an operator is >= ?






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






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






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






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






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






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






19. 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






20. 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






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






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






23. 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






24. 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.






25. A characteristic or property of an entity






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






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






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






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






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






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






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






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






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






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






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






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






38. 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






39. A source of data - usually stored in hidden database tables - about the types of entities or attributes and relationships in a database






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






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






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






43. 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






44. The field on which data are sorted






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






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






47. 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






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






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






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