31. | Hierarchical model is also called |
Answer: (a).Tree structure
|
32. | A main purpose of DBMS is to provide ____________ view of data to user. |
Answer: (d).None of these
|
33. | ____________ means to hide certain details of how data is stored and maintain. |
Answer: (a).Data Abstraction
|
34. | There are _________ levels of data abstraction. |
Answer: (b).3
|
35. | In data abstraction which is lowest level of abstraction ? |
Answer: (b).Physical Level
|
36. | _______ of abstraction explains how data is actually stored and describes the Data Structure and Access methods used by database. |
Answer: (c).Physical Level
|
37. | "What data is stored ?" is described by __________ level of abstraction in DBMS. |
Answer: (c).Conceptual
|
38. | Part of entire database is shown by ________ level of abstraction. |
Answer: (c).View
|
39. | If user doesn't know anything about the complexity of database application then that user is called as _____________. |
Answer: (a).Naive User
|
40. | Data Model is collection of conceptual tools for describing |
Answer: (d).All of these
|