mdl_tag_instance

INVESTIGATEUnclassified Moodle core/plugin table · 10 columns

Proposed target

Owner decision: migrate, transform, archive or exclude

Migration rule

No safe target inferred from schema name alone

Verification required

Inspect columns, row counts, code references, reports and retention requirements

Tracking

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
tagid	bigint	Not null		Resolve to target foreign key via source-ID crosswalk; do not assume numeric IDs match target IDs.	High: verify semantics/relationship/security
component	varchar(100)	Not null	''	Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning.	Schema-only inference
itemtype	varchar(100)	Not null	''	Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning.	Schema-only inference
itemid	bigint	Not null		Resolve to target foreign key via source-ID crosswalk; do not assume numeric IDs match target IDs.	High: verify semantics/relationship/security
contextid	bigint	Nullable		Resolve to target foreign key via source-ID crosswalk; do not assume numeric IDs match target IDs.	High: verify semantics/relationship/security
tiuserid	bigint	Not null	'0'	Resolve to target foreign key via source-ID crosswalk; do not assume numeric IDs match target IDs.	High: verify semantics/relationship/security
ordering	bigint	Nullable		Map same-named field where semantics match; confirm target type, nullability, defaults and business meaning.	Schema-only inference
timecreated	bigint	Not null	'0'	Convert Unix epoch to UTC timestamp; verify 0/null sentinel and date semantics.	Schema-only inference
timemodified	bigint	Not null	'0'	Convert Unix epoch to UTC timestamp; verify 0/null sentinel and date semantics.	Schema-only inference