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This answer is correct . There are five types of attributes in database. These are :- 1.) Simple attribute 2.) Composite attribute  3.) Single-valued attribute 4.) Multivalued attribute and 5.) Derived attribute. There is no attribute named Unary. Unary is a type of relation which is known as degree of relation (unary, binary, ternary etc.). So this is the correct answer according to the question.