There are some correlations between relational data base terminology
and object-oriented database terminology. Which of the following
relational model terms, respectively, correspond to the object model
terms of class, attribute and instance object?

A.
Relation, column, and tuple

B.
Relation, domain, and column

C.
Domain, relation, and column

D.
Relation, tuple, and column

Explanation:
Table shows the correspondence between the two models.
In comparing the two models, a class is similar to a relation; however,
a relation does not have the inheritance property of a class. An
attribute in the object model is similar to the column of a relational
table. The column has limitations on the data types it can hold while
an attribute in the object model can use all data types that are supported
by the Java and C++ languages. An instance object in the
object model corresponds to a tuple in the relational model. Again
the data structures of the tuple are limited while those of the instance
object can use data structures of Java and C++.