The main challenge for the clld framework is to balance abstraction and concreteness.

The following goals directed the design:

  • There must be a core database model, which allows for as much shared functionality as possible. In particular, publication of Linked Data and integration with services such as OLAC must be implemented by the framework.
  • Deployment of clld applications must be uniform and easy.
  • User interfaces of applications for browsers must be fully customizable.
  • It must be easy to re-implement legacy applications using the framework.

These constraints led to the following design decisions: