What is difference between knowledge base and a database? - Question & Answer Book

 

Answer: Database can be lost of things, but usually it means a relational database such as Oracle, Microsoft Access, MySQL, etc. These are typically use for storing sets of related data such as accounting records, questions on yahoo answers, etc.

A knowledge base is used in AI. When an algorithm tries to make a decision, it queries its knowledge base to determine how to act. Depending on the result it can then update the knowledge base. It is part of machine learning.