In the learning support system, the database which provides effective authoring-texts is important in order to achieve the learning objective efficiently. Currently, we have been implemented seamless virtual learning environment HARMONY. HARMONY consists of four types of agents and they require different forms of authoring-texts from the database. For such requirement, to prepare all authoring-texts of the same content for individual agents makes the data in the database enormous and makes it difficult to keep the consistently. Therefore, our objective is to construct the data structure based on XML which enables to express various forms of data. Validation of our data description is shown by generating the data formats that are required from each agent. The prototype system by which students get appropriate data is also introduced this paper.
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