46. Which out of the following is not a DBMS software ?

1. 1. dBASE

   
   
   

   2. FixPro

   
   
   

   3. Oracle

   
   
   

   4. SyBase

   
   
   

   5. Database 2000

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: E

   NA

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47. The primary key must be a (n) ...... field.

1. 1. numeric

   
   
   

   2. object

   
   
   

   3. unique

   
   
   

   4. related

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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48. Architecture of database can be viewed as

1. 1. two levels

   
   
   

   2. four levels

   
   
   

   3. three levels

   
   
   

   4. one level

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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49. Devices that could be used to input data into a database are

1. 1. keyboard, fax roller ball

   
   
   

   2. mouse, keyboard, monitor

   
   
   

   3. mouse, keyboard, touch screen

   
   
   

   4. All of the above

   
   
   

   5. None of the above

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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50. In case of entity integrity, the primary key may be

1. 1. not null

   
   
   

   2. null

   
   
   

   3. Both '1' and '2'

   
   
   

   4. any value

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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