What does the letter "E" mean in the Ecore?

Is it maybe EMF or EMOF开发者_如何转开发? Eclipse? Or something totally different or nothing at all...?

EMF - The core EMF framework includes a meta model (Ecore) for describing models and runtime support for the models including:

• change notification,
• persistence support with default XMI serialization,
• and a very efficient reflective API for manipulating EMF objects generically.

So I guess Ecore stands for "EMF core metamodel" here.

From this Eclipse help page:

For those of you that are familiar with OMG (Object Management Group) MOF (Meta Object Facility), you may be wondering how EMF relates to it.
Actually, EMF started out as an implementation of the MOF specification but evolved from there based on the experience we gained from implementing a large set of tools using it.
EMF can be thought of as a highly efficient Java implementation of a core subset of the MOF API.
However, to avoid any confusion, the MOF-like core meta model in EMF is called Ecore.

In the current proposal for MOF 2.0, a similar subset of the MOF model, which it calls EMOF (Essential MOF), is separated out. There are small, mostly naming differences between Ecore and EMOF; however, EMF can transparently read and write serializations of EMOF.

So the "Essential" for "E" does have some ground here.