In computer science and computer programming, the term strong typing is used to describe those situations where programming languages specify one or more restrictions on how operations involving values having different datatypes can be intermixed. The antonym is weak typing. However, these terms have been given such a wide variety of meanings over the short history of computing that it is often difficult to know, out of context, what an individual writer means when using them.
Reference:
http://en.wikipedia.org/wiki/Strongly_typed_languages
Reference:
http://en.wikipedia.org/wiki/Strongly_typed_languages
