tl;dr: A Swiss Army Knife for Data Specifications

xDDL is a format and system for generating artifacts based on a Data Definition Language that is not unlike JSON Schema. There are a lot of things you can do with it. To get started, pick a case that best fits your need.

• I want to learn more about writing my data definitions in xDDL

• I want to migrate ElasticSearch mappings between versions like Flyway does for my SQL databases

• I want to make sure my data models are consistent between different projects and languages

There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult.

– Tony Hoare

We want to make it easy to build something where there are obviously no deficiencies… at least in your data definitions.

---

xDDL is a project of ThoughtWorks, Atlanta.