[[Knowledge]] expressed as facts, propositions, and concepts — things that can be stated, verified, and stored as discrete units. Also called **know-what**. ^definition Examples: - "Our API uses OAuth 2.0", - "The production database is PostgreSQL 15", - "Jane is the lead for the payments team". ^examples ## In [[Knowledge base design]] Declarative knowledge maps naturally onto [[Node|graph nodes]]: - each fact is [[Make atomic notes|atomic]], - can be [[Always link your notes and explain why|linked to related facts]], - and retrieved by semantic similarity or structured query. It is the type most amenable to graph storage and agent retrieval. A note per concept, a node per entity — [[Make atomic notes|atomic]] structure is a direct implementation of this principle. ^kb-implications