# California legacy SMHS 1915(b) official source occurrences

`medicare_silver.ca_smhs_1915b_legacy_source_occurrence` · State programs · status live · 38 rows

Production-reconciled and exact-replay-idempotent lossless occurrence ledger for the legacy CA-17 through CA17.R09 authority chain. It preserves authority and artifact roles; source-native date evidence; official, original, archive, and acquisition URLs; exact payload identity; content-alias ordinals; retrieval and expected-unrecovered source limits; eligibility and quality flags; raw occurrence JSON; semantic hashes; and M-2 lineage without inferring an operative-current roster.

**Grain.** One frozen corpus snapshot and official legacy DHCS/CMS source occurrence, including recovered, retrieval-limited, and expected-unrecovered artifacts.

| column | type | meaning |
|---|---|---|
| corpus_snapshot_date | date |  |
| occurrence_id | string |  |
| authority_id | string |  |
| role | string |  |
| document_date | date |  |
| document_date_text | string |  |
| document_date_precision | string |  |
| date_basis | string |  |
| original_url | string |  |
| official_url | string |  |
| archive_timestamp | string |  |
| acquisition_url | string |  |
| byte_count | bigint |  |
| document_sha256 | string |  |
| expected_page_count | int |  |
| page_count_basis | string |  |
| payload_status | string |  |
| source_limit_reason | string |  |
| warning | string |  |
| request_reference | string |  |
| requested_end | date |  |
| effective_start | date |  |
| effective_end | date |  |
| content_occurrence_count | int |  |
| content_occurrence_ordinal | int |  |
| is_content_alias | boolean |  |
| is_recovered | boolean |  |
| is_retrieval_source_limit | boolean |  |
| is_expected_unrecovered | boolean |  |
| is_analytics_eligible | boolean |  |
| quality_flags | string |  |
| manifest_sha256 | string |  |
| raw_occurrence_json | string |  |
| semantic_row_sha256 | string |  |
| observed_period | date |  |
| asserted_at | date |  |
| effective_period_start | date |  |
| effective_period_end | date |  |
| cms_vintage_sequence | int |  |
| parse_revision | int |  |
| parser_artifact_hash | string |  |
| source_url | string |  |
| sha256_content_hash | string |  |
| source_id | string |  |
| is_current | boolean |  |
| bronze_object_key | string |  |
| s3_version_id | string |  |
| vintage_tag | string |  |
| drug_source_version_id | string |  |

Query it: `query_substrate` with `SELECT ... FROM medicare_silver.ca_smhs_1915b_legacy_source_occurrence WHERE ... LIMIT 100`; read `describe_data_source("medicare_silver.ca_smhs_1915b_legacy_source_occurrence")` first.