History & versions

Show history

brca.history()

History is an append-only ledger of alias events.

Convert to pandas

brca.history().to_df()

Select a version safely

• brca.v(k) returns an immutable DatasetVersion
• brca.use(k) mutates the alias pointer + logs an event

“presence”

Each DatasetVersion shows presence:

• present = bytes exist locally
• missing = metadata exists, bytes not present (common after imports)