Your filesystem is already a database. Most tools just don't treat it that way.
That's the core idea behind the Markdown Database Pattern — written up properly on The Way of Markdown, a site we've been contributing to that makes the case for building things on plain markdown instead of locked-in platforms. We think it's a pattern worth more attention, so here's the short version.
Treat a folder of markdown files as a database. Each file is a record. Frontmatter fields are columns. Directories are tables. Tags, wikilinks, and tasks in the body become queryable relations.
Filesystem Database
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