add database commands for exchange information.
add database commands for exchange information.

ccjeremiahlin/fse-F14-SA5-SSNoC-Java-REST,bluebytes60/fse-F14-SA5-SSNoC-Java-REST,bluebytes60/fse-F14-SA5-SSNoC-Java-REST,ccjeremiahlin/fse-F14-SA5-SSNoC-Java-REST