---
title: "James Coplien"
section: "entities"
type: "entity"
created: "2026-08-25"
updated: "2026-08-25"
tags: ["person", "educator"]
canonical: "https://pyweb.dev/wiki/james-coplien"
---
# James Coplien

Co-author with [trygve reenskaug](/wiki/trygve-reenskaug) of DCI (Data, Context, and Interaction) architecture. His DCI pattern influenced [robert c martin](/wiki/robert-c-martin)'s [clean architecture](/wiki/clean-architecture) synthesis by contributing to the understanding of separation of concerns in layered systems.

## Related Concepts
- DCI — his architectural pattern contribution
- [clean architecture](/wiki/clean-architecture) — incorporates ideas from his DCI work

 [[source: uncle-bob-clean-architecture-2012]](/wiki/raw/articles/uncle-bob-clean-architecture-2012)

---

## Agent Navigation

cluster: person (170 pages) | betweenness: 0

### References (outbound)
- [Trygve Reenskaug](https://pyweb.dev/wiki/trygve-reenskaug.md)
- [Clean Architecture](https://pyweb.dev/wiki/clean-architecture.md)

### Referenced by (inbound)
- [Clean Architecture](https://pyweb.dev/wiki/clean-architecture.md)
- [Trygve Reenskaug](https://pyweb.dev/wiki/trygve-reenskaug.md)

### Evidence (verified primary sources)
- [uncle-bob-clean-architecture-2012](https://pyweb.dev/wiki/raw/articles/uncle-bob-clean-architecture-2012.md) | origin: https://blog.cleancoder.com/uncle-bob/2012/08/13/the-clean-architecture.html | ingested: 2026-08-25 | sha256: b99ae450b5981dbee264aec42701b920ce96ccedea01d03243ea48c414442379

### Machine endpoints
- Knowledge graph: https://pyweb.dev/api/graph.json
- Graph analysis: https://pyweb.dev/api/graph-analysis.json
- Context index: https://pyweb.dev/llms.txt