# instance_ai_observation_locks ## Description
Table Definition ```sql CREATE TABLE "instance_ai_observation_locks" ("observationScopeId" varchar NOT NULL, "taskKind" varchar(20) NOT NULL, "holderId" varchar(64) NOT NULL, "heldUntil" datetime(3) NOT NULL, "createdAt" datetime(3) NOT NULL DEFAULT (STRFTIME('%Y-%m-%d %H:%M:%f', 'NOW')), "updatedAt" datetime(3) NOT NULL DEFAULT (STRFTIME('%Y-%m-%d %H:%M:%f', 'NOW')), CONSTRAINT "CHK_instance_ai_observation_locks_taskKind" CHECK ("taskKind" IN ('observer', 'reflector')), CONSTRAINT "FK_103e2e5f454860b28ea05a82c74" FOREIGN KEY ("observationScopeId") REFERENCES "instance_ai_threads" ("id") ON DELETE CASCADE, PRIMARY KEY ("observationScopeId", "taskKind")) ```
## Columns | Name | Type | Default | Nullable | Children | Parents | Comment | | ---- | ---- | ------- | -------- | -------- | ------- | ------- | | createdAt | datetime(3) | STRFTIME('%Y-%m-%d %H:%M:%f', 'NOW') | false | | | | | heldUntil | datetime(3) | | false | | | | | holderId | varchar(64) | | false | | | | | observationScopeId | varchar | | false | | [instance_ai_threads](instance_ai_threads.md) | | | taskKind | varchar(20) | | false | | | | | updatedAt | datetime(3) | STRFTIME('%Y-%m-%d %H:%M:%f', 'NOW') | false | | | | ## Constraints | Name | Type | Definition | | ---- | ---- | ---------- | | - | CHECK | CHECK ("taskKind" IN ('observer', 'reflector')) | | - (Foreign key ID: 0) | FOREIGN KEY | FOREIGN KEY (observationScopeId) REFERENCES instance_ai_threads (id) ON UPDATE NO ACTION ON DELETE CASCADE MATCH NONE | | observationScopeId | PRIMARY KEY | PRIMARY KEY (observationScopeId) | | sqlite_autoindex_instance_ai_observation_locks_1 | PRIMARY KEY | PRIMARY KEY (observationScopeId, taskKind) | | taskKind | PRIMARY KEY | PRIMARY KEY (taskKind) | ## Indexes | Name | Definition | | ---- | ---------- | | sqlite_autoindex_instance_ai_observation_locks_1 | PRIMARY KEY (observationScopeId, taskKind) | ## Relations ```mermaid erDiagram "instance_ai_observation_locks" |o--|| "instance_ai_threads" : "FOREIGN KEY (observationScopeId) REFERENCES instance_ai_threads (id) ON UPDATE NO ACTION ON DELETE CASCADE MATCH NONE" "instance_ai_observation_locks" { datetime_3_ createdAt datetime_3_ heldUntil varchar_64_ holderId varchar observationScopeId PK varchar_20_ taskKind PK datetime_3_ updatedAt } "instance_ai_threads" { datetime_3_ createdAt varchar id PK TEXT metadata varchar_36_ projectId FK varchar_255_ resourceId TEXT title datetime_3_ updatedAt } ``` --- > Generated by [tbls](https://github.com/k1LoW/tbls)