Three things to read before the first pipeline: the concepts Lima uses, the onboarding path an estate follows, and the thirty-minute first pipeline that shows the parts working together.
| Concept | What it is |
|---|---|
| Connection | A registered way to reach one system, with credentials referenced from the vault and a tested endpoint. |
| Catalog | The inventory of tables, columns, definitions, owners and quality scores across every connected system; shared by questions and pipelines. |
| Pipeline | A sequence of operators on a canvas: connect, extract, transform, load, orchestrate, and where needed return. |
| Run | One execution of a pipeline, with a report: rows in, rows out, control totals, exceptions, deadline met or missed. |
| Run window | The period in which a run must finish, with a deadline on the business calendar; a failed check pauses the run and the clock. |
| Exception record | A row that failed a check: kept, routed to an owner, replayed once fixed. |
| Access policy | Role and attribute rules deciding who sees which rows and columns, applied at query time and at load time. |
| Write-back | A result written into the system that owns it through its released interface; confirmed by that system; recorded in the ledger. |
Environments: development, test and production, with configuration promoted through reviewed changes in Git. The glossary defines every term used above: glossary.