Metadata in the e-learning repository

The aim of the article is to present the model of knowledge repository based on the metadata standards used to describe the educational course contents using LOM (Learning Object Metadata) as the example. The components of description of metadata on various aggregation levels as well as exemplary tools for metadata edition are presented. The importance of this model for development of e-learning is discussed. Special attention is paid to generalization of dissipated objects and Learning Objects (LO) are such ones and to their effect on reduction of costs related to creating new educational objects on various platforms taking advantage of ready to use courses.