knowledge base

from The American Heritage® Dictionary of the English Language, 4th Edition

• n. Computer Science The part of an expert system that contains the facts and rules needed to solve problems.
• n. A collection of facts and rules for problem solving.

from Wiktionary, Creative Commons Attribution/Share-Alike License

• n. A database designed to meet the complex storage and retrieval requirements of computerized knowledge management, especially in support of artificial intelligence or expert systems.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• n. the content of a particular field of knowledge