mirror of
https://github.com/open-metadata/OpenMetadata.git
synced 2025-07-13 12:08:47 +00:00
5261c2bad8
* Move Relationship type to json-schema * Replace Relationship with EntityRelationshipType (backward compatible) * Add documentation about entity relationship
96 lines
2.3 KiB
Markdown
96 lines
2.3 KiB
Markdown
# Relationship
|
|
|
|
## Introduction
|
|
|
|
Within OpenMetadata we have predefined relationship types. The Relationship enum captures all the relationships between entities.
|
|
|
|
The relationship enum is described in the [entityRelationship](https://github.com/open-metadata/OpenMetadata/blob/main/catalog-rest-service/src/main/resources/json/schema/type/entityRelationship.json) json-schema.
|
|
|
|
## Relationship Types
|
|
|
|
### CONTAINS
|
|
|
|
CONTAINS relationship is a stronger relationship than HAS. The entity that contains other entities can't be deleted until all the entities that it contains are also deleted. Some examples of these relationships:
|
|
|
|
- Database --- contains --> Table
|
|
- DatabaseService --- contains --> Database
|
|
- MessagingService --- contains --> Topic
|
|
- PipelineService --- contains --> Pipeline
|
|
- DashboardService --- contains --> Charts
|
|
- DashboardService --- contains --> Dashboard
|
|
- Role --- contains --> Policy
|
|
|
|
|
|
### CREATED
|
|
|
|
User/Bot --- created ---> Thread
|
|
|
|
### REPLIED_TO
|
|
|
|
User/Bot --- repliedTo ---> Thread
|
|
|
|
### IS_ABOUT
|
|
|
|
Thread --- isAbout ---> Entity
|
|
|
|
### ADDRESSED_TO
|
|
|
|
Thread --- addressedTo ---> User/Team
|
|
|
|
### MENTIONED_IN
|
|
|
|
User, Team, Data assets --- mentionedIn ---> Thread
|
|
|
|
### TESTED_BY
|
|
|
|
Entity --- testedBy ---> Test
|
|
|
|
### USES
|
|
|
|
- {Dashboard|Pipeline|Query} --- uses ---> Table
|
|
- {User} --- uses ---> {Table|Dashboard|Query}
|
|
- {MlModel} --- uses ---> {Dashboard}
|
|
|
|
|
|
### OWNS
|
|
|
|
{User|Team|Org} --- owns ---> {Table|Dashboard|Query}
|
|
|
|
### PARENT_OF
|
|
|
|
{Role} --- parentOf ---> {Role}
|
|
|
|
### HAS
|
|
|
|
HAS relationship is a weaker relationship compared to CONTAINS relationship. The entity that has HAS another entity can be deleted. During deletion, the HAS relationship is simply deleted. Examples of HAS relationship:
|
|
|
|
|
|
- Team --- has --> User
|
|
- User --- has ---> Role
|
|
- Table --- has ---> Location
|
|
- Database --- has ---> Location
|
|
- Dashboard --- has ---> Chart
|
|
|
|
|
|
### FOLLOWS
|
|
|
|
{User} --- follows ----> {Table, Database, Metrics...}
|
|
|
|
### JOINED_WITH
|
|
|
|
{Table.Column...} --- joinedWith ---> {Table.Column}
|
|
|
|
### UPSTREAM
|
|
|
|
Used for Lineage relationships
|
|
|
|
- {Table1} --- upstream ---> {Table2} (Table1 is used for creating Table2}
|
|
- {Pipeline} --- upstream ---> {Table2} (Pipeline creates Table2)
|
|
- {Table} --- upstream ---> {Dashboard} (Table was used to create Dashboard)
|
|
|
|
### APPLIED_TO
|
|
|
|
Used to describe Policy relationships
|
|
|
|
Policy --- appliedTo ---> Location (Policy1 is applied to Location1)
|