This excludes binary data but includes knowledge. Knowledge retrieval is knowledge-based IR, i.e. the exploitation of conceptual relations between pieces of information for retrieving them. In knowledge-based queries, logical inferences are automatically done. In knowledge-based navigation, the user is guided by the conceptual structuration of the displayed information. In that case, it is generally called knowledge modelling.
KATs are generally also KBMSs.
Data on its own has no meaning, only when interpreted by some kind of data processing system does it take on meaning and become information . People or computers can find patterns in data to perceive information, and information can be used to enhance knowledge . Since knowledge is prerequisite to wisdom, we always want more data and information. But, as modern societies verge on information overload , we especially need better ways to find patterns. 123454657.99 is data.