Viewing Relationship Details

Function

This API is used to obtain relationship details by ID.

Calling Method

For details, see Calling APIs.

URI

GET /v2/{project_id}/design/relation/{id}

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain the project ID, see Project ID and Account ID.
id	Yes	String	Entity ID, which is a string

**Table 2** Query Parameters
Parameter	Mandatory	Type	Description
latest	No	Boolean	Indicates whether to query the latest.

Request Parameters

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	IAM token, which is obtained by calling the IAM API for obtaining a user token (value of X-Subject-Token in the response header). This field is mandatory for authentication using tokens.
workspace	Yes	String	Workspace ID. For details about how to obtain the workspace ID, see Instance ID and Workspace ID.
X-Project-Id	No	String	Project ID. For details about how to obtain the project ID, see Project ID and Account ID. This parameter is mandatory for API requests that use AK/SK authentication in multi-project scenarios.
Content-Type	No	String	Default value: application/json;charset=UTF-8 This parameter is optional. If the body is available, this parameter is mandatory. If the body is unavailable, you do not need to set this parameter or verify it.

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
data	data object	data: unified outermost data structure of the returned result.

**Table 5** data
Parameter	Type	Description
value	RelationVO object	value: unified outer data structure of the returned result.

**Table 6** RelationVO
Parameter	Type	Description
id	String	ID, which is a string
source_table_id	String	Source table ID, which is a string
target_table_id	String	Destination table ID, which is a string
name	String	Relationship name.
source_table_name	String	Name of the source table.
target_table_name	String	Name of the destination table.
role	String	Role.
tenant_id	String	Tenant ID.
source_type	String	Relationship type, which is read-only. Options: ONE: Each child (parent) logical entity has only one record in the parent (child) logical entity. ZERO_OR_ONE: indicates that each child (parent) logical entity data record corresponds to only one data record in the parent (child) logical entity. ZERO_OR_N: indicates that each child (parent) logical entity data record may correspond to multiple data records in the parent (child) logical entity. ONE_OR_N: Each child (parent) logical entity corresponds to at least one data record in the parent (child) logical entity.
target_type	String	Relationship type, which is read-only. Options: ONE: Each child (parent) logical entity has only one record in the parent (child) logical entity. ZERO_OR_ONE: indicates that each child (parent) logical entity data record corresponds to only one data record in the parent (child) logical entity. ZERO_OR_N: indicates that each child (parent) logical entity data record may correspond to multiple data records in the parent (child) logical entity. ONE_OR_N: Each child (parent) logical entity corresponds to at least one data record in the parent (child) logical entity.
create_by	String	Creator.
update_by	String	Person who updates the information.
create_time	String	Creation time, which is read-only. The format complies with RFC3339 and is accurate to seconds. The UTC time zone is yyyy-mm-ddTHH:MM:SSZ, for example, 1970-01-01T00:00:00Z.
update_time	String	Update time, which is read-only. The format complies with RFC3339 and is accurate to seconds. The UTC time zone is yyyy-mm-ddTHH:MM:SSZ, for example, 1970-01-01T00:00:00Z.
mappings	Array of RelationMappingVO objects	Table attribute information, which is read-only.

**Table 7** RelationMappingVO
Parameter	Type	Description
id	String	ID, which is a string
relation_id	String	Relationship ID, which is a string
source_field_id	String	Source field ID, which is a string
target_field_id	String	Destination field ID, which is a string
source_field_name	String	Name of the source table.
target_field_name	String	Name of the destination table.
create_by	String	Creator.
update_by	String	Person who updates the information.
create_time	String	Creation time, which is read-only. The format complies with RFC3339 and is accurate to seconds. The UTC time zone is yyyy-mm-ddTHH:MM:SSZ, for example, 1970-01-01T00:00:00Z.
update_time	String	Update time, which is read-only. The format complies with RFC3339 and is accurate to seconds. The UTC time zone is yyyy-mm-ddTHH:MM:SSZ, for example, 1970-01-01T00:00:00Z.

Status code: 400

**Table 8** Response body parameters
Parameter	Type	Description
error_code	String	Error code, for example, DS.6000, indicating that the request fails to be processed.
error_msg	String	Error message
data	Object	Returned data information.

Status code: 401

**Table 9** Response body parameters
Parameter	Type	Description
error_code	String	Error code, for example, DS.6000, indicating that the request fails to be processed.
error_msg	String	Error message
data	Object	Returned data information.

Status code: 403

**Table 10** Response body parameters
Parameter	Type	Description
error_code	String	Error code, for example, DS.6000, indicating that the request fails to be processed.
error_msg	String	Error message
data	Object	Returned data information.

Example Requests

This API queries relationship details by ID to obtain the relationship list.

GET https://{endpoint}/v2/{project_id}/design/relation/1225137038202957824

Example Responses

Status code: 200

This operation is successful, and the returned data is RelationVO details.

{
  "data" : {
    "value" : {
      "id" : "1225137038202957824",
      "source_table_id" : "1225137036110000128",
      "target_table_id" : "1225137037896773632",
      "name" : "left_relation_right_test",
      "source_table_name" : "test_left_relation",
      "target_table_name" : "test_right_test",
      "role" : null,
      "tenant_id" : "0833a5737480d53b2f25c010dc1a7b88-workspace-eeb055e69c624311b6b9cfee89a4ec70",
      "source_type" : "ONE",
      "target_type" : "ONE",
      "create_by" : "test_uesr",
      "update_by" : "test_uesr",
      "create_time" : "2024-04-03T17:37:12+08:00",
      "update_time" : "2024-04-03T17:37:12+08:00",
      "mappings" : [ {
        "id" : "1225137038211346432",
        "relation_id" : "1225137038202957824",
        "source_field_id" : "1225137036294549504",
        "target_field_id" : "1225137037896773633",
        "source_field_name" : "id",
        "target_field_name" : "id",
        "create_by" : "test_uesr",
        "update_by" : "test_uesr",
        "create_time" : "2024-04-03T17:37:12+08:00",
        "update_time" : "2024-04-03T17:37:12+08:00"
      } ]
    }
  }
}

Status code: 400

BadRequest

{
  "error_code" : "DS.60xx",
  "error_msg" : "The user request is illegal."
}

Status code: 401

Unauthorized

{
  "error_code" : "DS.60xx",
  "error_msg" : "User authentication failed."
}

Status code: 403

Forbidden

{
  "error_code" : "DS.60xx",
  "error_msg" : "The user does not have permission to call this API."
}

Status Codes

Status Code	Description
200	This operation is successful, and the returned data is RelationVO details.
400	BadRequest
401	Unauthorized
403	Forbidden

Parent Topic: ER Modeling

Previous topic: Querying a Relationship

Next topic: Querying All Relationships in a Model

Feedback

Was this page helpful?

Helpful Not helpful

Provide feedback

Thank you very much for your feedback. We will continue working to improve the documentation.

The system is busy. Please try again later.