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mdl_backup_logs
ARCHIVELogs / analytics / technical history · 5 columnsProposed target
Archive compressed; selectively transform required reporting aggregates
Migration rule
Usually not required for core LMS runtime
Verification required
Identify compliance/audit and analytics use cases before exclusion
Tracking
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| Column | Type | Null | Default | Target mapping | Risk |
|---|---|---|---|---|---|
| id | bigint | Not null | Preserve as legacy source ID; generate target PK unless target accepts stable legacy key. | High: verify semantics/relationship/security | |
| backupid | varchar(32) | Not null | '' | Resolve to target foreign key via source-ID crosswalk; do not assume numeric IDs match target IDs. | High: verify semantics/relationship/security |
| loglevel | smallint | Not null | Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning. | Schema-only inference | |
| message | longtext | Not null | Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning. | Schema-only inference | |
| timecreated | bigint | Not null | Convert Unix epoch to UTC timestamp; verify 0/null sentinel and date semantics. | Schema-only inference |