Collation refers to a set of rules that determine how data is sorted and compared. Character data is sorted using rules that define the correct character sequence, with options for specifying case-sensitivity, accent marks, kana character types and character width.
Different type of Collation Sensitivity?
A and a, B and b, etc.
a and á, o and ó, etc.
When Japanese kana characters Hiragana and Katakana are treated differently, it is called Kana sensitive.
When a single-byte character (half-width) and the same character when represented as a double-byte character (full-width) are treated differently then it is width sensitive.