nodes
--------
nodeid[PK], hostname, password, active, last_upd, last_ip


architectures
--------------
archid[PK], name


distributions
--------------
distid[PK], name, version


node_sources
--------------
nodeid[->nodes], sourceid[->sources]


sources
--------
sourceid[PK], distid[->dists], compid[->components], archid[->architectures]


components
-----------
compid[PK], name


node_packages
-------------
nodeid[->nodes], pkgid[->packages], status


packages
---------
pkgid[PK], sourceid[->sources], pkgname, installsize, version


sessions
---------
sessionid[PK], nodeid[->nodes], timeout