EMDAC is planned to be the hub of all EOL Data services. All these services are based on a central metadata database to provide different views, access and information to different user groups. Including within EMDAC are CODIAC, the Field Catalog and its related tools, Zinc, Jedi, Mapserver, Master Lists, the Dataset Tracking System (DTS) and its related tools, MetaArch, QCODIAC and the Satellite Mass Store Retrieval Tool.