Entity Relationship

Entity-Relationship (ER) modeling is a data modeling technique used to describe the data requirements for an information system. ER diagrams visually represent entities (objects or concepts), their attributes, and the relationships between them. ER modeling is a fundamental tool in database design and system analysis, with notation variants including Chen's original notation, Crow's Foot notation, and Barker's notation.

Entity Relationship is profiled on the APIs.io network. Tagged areas include Data Modeling, Database Design, ER Diagrams, and Systems Analysis.

🌐 Visit website 📡 Source on GitHub

6.2/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-21 · rubric v0.12.0

0 APIs

Data ModelingDatabase DesignER DiagramsSystems Analysis

Kin Score

Kin Score How this is scored →
scored 2026-08-21 · rubric v0.12.0

Composite quality — 6.2/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.4 / 20

Access Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 4.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/entity-relationship: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Resources

Documentation 1

Reference material describing how the API behaves

Reference

Reference

Other 2

Properties that don't map to a standard resource type

ChenNotation

ChenNotation

CrowsFootNotation

CrowsFootNotation

Source (apis.yml)

aid: entity-relationship
name: Entity Relationship
description: Entity-Relationship (ER) modeling is a data modeling technique used to describe the data requirements for an
  information system. ER diagrams visually represent entities (objects or concepts), their attributes, and the relationships
  between them. ER modeling is a fundamental tool in database design and system analysis, with notation variants including
  Chen's original notation, Crow's Foot notation, and Barker's notation.
type: Index
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/entity-relationship.png
tags:
- Data Modeling
- Database Design
- ER Diagrams
- Systems Analysis
url: https://en.wikipedia.org/wiki/Entity%E2%80%93relationship_model
created: '2025-01-01'
modified: '2026-04-28'
position: Consumer
access: 3rd-Party
specificationVersion: '0.23'
apis: []
common:
- type: Reference
  url: https://en.wikipedia.org/wiki/Entity%E2%80%93relationship_model
- type: ChenNotation
  url: https://en.wikipedia.org/wiki/Entity%E2%80%93relationship_model#Chen_notation
- type: CrowsFootNotation
  url: https://en.wikipedia.org/wiki/Entity%E2%80%93relationship_model#Crow's_foot_notation
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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