Composite attribute , Multivalued Attribute, Derived Attribute - Definitions,Features - Database

Q.  Match the following

A) Composite attribute ------ i) Attribute whose value is calculated from other attributes
B) Multivalued Attribute ---- ii) Attribute that can be further subdivided to yield additional attributes
C) Derived Attribute -------- iii) Attribute that can have more values
- Published on 19 Oct 15

a. A-i, B-ii, C-iii
b. A-ii, B-i, C-iii
c. A-ii, B-iii, C-i
d. A-iii, B-ii, C-i

ANSWER: A-ii, B-iii, C-i

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    Discussion

  • Nirja Shah   -Posted on 29 Oct 15
    Composite Attributes
    - These Attributes are classified as having many parts to them or just a single unbreakable attribute.
    - It is an attribute that can be subdivided into other single attributes with meanings of their own.
    - A single attribute is just an attribute that cannot be subdivided into parts.

    Multivalued attributes
    - This type of attribute can store multiple data in them.

    Derived attributes
    - This type of attribute is calculated from another attribute.
    - It may not be stored in the database but rather calculated using algorithm.

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