Data query and knowledge query

Question

Write down some of the differences between the data query and the knowledge query.

Answer 1

A data query determines the real data resides within the database and corresponds to the basic retrieval statement within the database system.

A knowledge query determines the rules, patterns and other types of knowledge within the database and corresponds to the querying database knowledge involving the deduction rules, generalized rules, integrity constraints, frequent patterns and several other regularities.