Silver Layer - ER Diagram

The Silver layer stores measurement data in a tag-based normalized model. Core time-series data lives in channels, while metadata is split across tag tables (key-value pairs) and metric tables (pre-computed statistics).

channels format variants:

• RLE format -- both start and end are present (run-length encoded)
• Raw format -- only start is present (end is computed on-the-fly via the query engine)