Which of the following is the attribute that is used to set a global identifier for a microdata item?*1 pointa) keyb) idc) itemclassd) itemid

Which attribute specifies a unique alphanumeric identifier to be associated with an element?*1 pointa) classb) idc) articled) html

The term used to describe an attribute that can function like a primary key is a*1 pointCandidate keySecondary keyForeign keyComposite key

A piece of information about a particular object is called Question 3Select one:a.an identifier.b.an attribute.c.a field.d.a data value

Attributes are assigned value.*1 pointWhen instances of objects are definedWhen operations are performed on an objectWhen methods are invokedWhen classes are identified

When to use the class attribute and the id attribute ?