This work is in the domain of Electronic Document Management (EDM) (1). The documents can be an electronic writing, an image, a sound file, a network protocol message, a set of data organized in a file. The principal objective of this paper is to design and implement an electronic lib rary (2) based on an object oriented approach (3). This library will be used as a documentation tool by the different participants in a scientific community of teaching and training environment. In the design of this library we have to design and implement storage method that uses XML (4) format for the scientific documents.