> ## Documentation Index > Fetch the complete documentation index at: https://api-docs.datagol.ai/llms.txt > Use this file to discover all available pages before exploring further. # Create Extraction > Creates an extraction configuration inside a workspace. Supports both STANDARD and ADVANCED extraction modes. ## OpenAPI ````yaml /openapi/openapi.yaml post /noCo/api/v2/workspaces/{workspaceId}/extraction openapi: 3.0.0 info: title: DataGOL APIs version: 1.0.0 description: '' servers: - url: https://be.datagol.ai - url: https://be.datagol.ai - url: https://kg.datagol.ai - url: https://ai.datagol.ai security: [] tags: - name: Links & Joins description: > ## 🔗 Links & Joins LINK and LOOKUP are special workbook column types that enable relational data modeling across tables. | Column Type | Purpose | |---|---| | `LINK` | Defines a relationship between two tables | | `LOOKUP` | Projects columns from an associated table via a link | Both are configured through `ColumnDTO.colOptions`. A table can have multiple link columns, and each link can have multiple lookup columns. --- ## 📐 UI Data Types - **LINK** — Special column used to represent inter-table relations - **LOOKUP** — Special column used to project associated table fields via a link --- ## 🔗 LINK Semantics A LINK column stores metadata for: - `tableId` — Current table - `associatedTableId` — Associated (linked) table - `relationType` — Type of relationship - `linkColumnId` — Link column identifier **Supported relation patterns:** | Pattern | Description | |---|---| | `ONE_TO_ONE` | Each record in the source maps to one record in the destination | | `ONE_TO_MANY` | One source record maps to many destination records | | `MANY_TO_MANY` | Many source records map to many destination records | --- ## 🔍 LOOKUP Semantics - A LOOKUP column is tightly coupled with a specific LINK column - References a link using `linkColumnId` - Represents a selected column from the associated table - Multiple lookup columns can be defined for the same link --- ## 🗂️ Metadata in `ColumnDTO.colOptions` Use `colOptions` to persist link/lookup metadata. | Field | Description | |---|---| | `columnId` | Current column ID | | `tableId` | Current table ID | | `associatedTableId` | Associated table ID | | `linkColumnId` | Link column ID — used by LOOKUP; references the LINK column's `columnId` | | `relationType` | Relation semantics for LINK | --- ## 🔄 Manual Linking Record Flow To create manual record-level links: 1. Fetch associated table schema/data 2. User selects associated record(s) to link 3. Send linking payload with: - `sourceRecordId` — PK of the current table row - `destinationRecordId` — PK of the associated table row - `linkColumnId` — LINK column identifier 4. Backend resolves link metadata from `linkColumnId` (relation type, associated table, direction/constraints) 5. Backend applies relation rules and stores the link relation --- ## 📋 Record Linking Contract | Field | Description | |---|---| | `sourceRecordId` | PK of the current table row | | `destinationRecordId` | PK of the associated table row | | `linkColumnId` | LINK column identifier | | `tableId` | Current table ID | > Backend derives all remaining relation metadata from the link configuration. --- ## ⚠️ Important Notes > - LINK and LOOKUP are **column-level constructs** first; record linking is a data-level operation built on top > - LOOKUP behavior depends on LINK existence and metadata integrity > - With multiple links to the same associated table, each LOOKUP must bind to the correct `linkColumnId` > - Always treat the associated row ID as the associated table PK for linking UI selection paths: /noCo/api/v2/workspaces/{workspaceId}/extraction: post: tags: - AI Extraction summary: Create Extraction description: | Creates an extraction configuration inside a workspace. Supports both STANDARD and ADVANCED extraction modes. parameters: - name: workspaceId in: path required: true schema: type: string example: '{{workspaceId}}' requestBody: required: true content: application/json: schema: type: object required: - title - extractionMode - elementType - outputConfiguration - primaryKeyColumnId properties: title: type: string description: Extraction configuration title extractionMode: type: string description: STANDARD or ADVANCED elementType: type: string description: FILE, FOLDER, or COLUMN elementId: type: string description: FILE ID, FOLDER ID, or COLUMN ID inputTableId: type: string storeExtractedData: type: boolean scheduleType: type: string schedule: type: object properties: cronExpression: type: string outputConfiguration: type: object properties: createNewWorkbook: type: boolean title: type: string primaryKeyColumnId: type: string columnConfiguration: type: array items: type: object required: - name - description properties: name: type: string description: type: string uiMetadata: type: object properties: title: type: string uiDataType: type: string advancedSchema: type: object description: User-defined schema for advanced extraction additionalProperties: true example: title: config test extractionMode: ADVANCED elementType: COLUMN elementId: 40743480-286a-4531-b3f3-7d0b68018c9d storeExtractedData: true scheduleType: MANUAL schedule: cronExpression: '' outputConfiguration: createNewWorkbook: true title: sample transcripts output inputTableId: 7963e2b4-dddc-4dd4-8c44-8c70c47da692 primaryKeyColumnId: - ee42ef18-0d8a-461e-bae1-4370a8c13fec columnConfiguration: - name: title description: Transcript title uiMetadata: title: Title uiDataType: SINGLE_LINE_TEXT - name: segments description: Transcript segments uiMetadata: title: Segments uiDataType: JSON advancedSchema: properties: title: type: string segments: type: array responses: '200': description: Extraction created successfully security: - bearerAuth: [] components: securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT description: | This API uses OAuth 2.0 with the authorization code grant flow. ````