Case Study

Organizing complex treaty records across countries and time

We helped modernize the UN Treaties Database by connecting treaty records, State participation, and historical information in a system designed for reliable administration and public access.

Client United Nations Office for Disarmament Affairs
System UN Treaties Database
Focus Information management · Historical records · System integration
Technology Drupal · PHP · MySQL
Public UN Treaties Database record for the Treaty on the Prohibition of Nuclear Weapons, with treaty details and a participant table
Treaty details and State participation in one public record. The page brings treaty dates and depositary information together with participant actions. Captured in October 2026. View live treaty record

01 — The challenge

Keep related treaty information connected

Treaty records include more than the original agreement. They may also involve protocols, amendments, participating States, signatures, ratifications, declarations, and objections. These connections become harder to manage when records span decades and historical country names or information change.

The goal was to organize this information so administrators could maintain it consistently and the public could explore treaties and related records without losing important historical context.

02 — The approach

Connect records while preserving historical context

The system needed to represent how treaties, related instruments, and State actions connect, while accounting for historical exceptions and inconsistent legacy records.

We also aligned treaty information with a shared Countries database, helping maintain consistency across systems when country names or identities changed over time.

03 — Implementation

Build a system for connected, maintainable records

The system connects treaty relationships, State actions, historical data, and administrative tools.

Treaty relationships

Treaties, protocols, and amendments are represented as related records. Signatures, ratifications, declarations, and objections remain associated with the relevant treaty and participating State.

Historical data and quality

We reviewed legacy records, addressed inconsistent formatting and incomplete information, and accounted for historical exceptions that required more than simple name matching.

Administration and integration

Administrative tools support maintenance of treaty details, dates, actions, and country relationships. Shared country data helps reduce inconsistencies across related records.

UNODA Treaties Database homepage showing the latest treaty actions table with State, instrument, date, and treaty action
Recent treaty actions at a glance. The homepage provides date filters and a browsable list of States, instruments, dates, and treaty actions. Captured in October 2026. Open the live database

04 — Outcome

A more manageable foundation for treaty information

The database brings treaty records, State participation, and related actions together in a structured system that supports public exploration and ongoing administration.

  • Related treaties and amendments remain connected.
  • State actions retain their context within the relevant treaty.
  • Historical country names and exceptional records can be handled explicitly.
  • Shared country data supports consistency across records.
  • Administrative tools support continued data maintenance.

Capabilities

  • Information architecture
  • Data cleanup and normalization
  • Database design
  • System integration
  • Administrative tools

What this project demonstrates

This project demonstrates our ability to connect complex treaty records, State participation, and historical information in a system that supports reliable administration and public access.

Working with information that is connected, historical, and difficult to standardize?

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