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Semantic objects are grouped into……..
a) composites                      

b) entities
c) classes                              

d) associations

c

What does term semantic means?
a) meaning                          

b) data
c) detailed                            

d) attribute

a

Which of the following is not level of data abstraction?
a) physical level  

b) critical level
c) logical level      

d) view level

b

Which of the following is not database schema?
a) physical schema            

b) critical schema
c) logical schema

d) view schema

b

What is logical design of database is called?
a) database instance          

b) database snapshot
c) database schema

d) all of these

c

Which of the following is the structure of database?
a) table                                 

b) relation
c) schema                             

d) none of these

b