hi: i want to learn storm. so the problem i am trying to solve with it is: requirements: -------------------------------------------------------------------------------------- * for a arbitrary group of windows computers:    extract the list of all automatic but stopped services    store this list in a database for historical purposes (dont' ask why).  * the generation of this list can be run several times per day.  * at any time in the future be able to execute a query to return the information generated by the previous code. notes:-------------------------------------------------------------------------------------------------  * i have only used the services table as an example, there will be in fact several other tables eg. processes, operating-systems, events, diskspace, freememory etc, but whatever is applicable for services will work for these other tables as they have a similar structure. currently i have this setup (below), where a group can have 1..n computers and a computer can have 1..n service records. Now if the list was only generated once per day, this schema would be fine (i think) as  sometime in the future i would just query on the service table for for all records for a particular day the list was generated - but the list can be generated several times per day. so i thought about having a  "class Job" so everytime the list is generated a unique job_id would be generated and would be stored in a link Class JobComputer create table jobs (id integer, name varchar), create table  jobs_computers (job_id integer, computer_id integer). but i thought it was starting to look ugly - confusion started to reign so i thought i would ask here about the best way to achieve my goal and if a linktable is the go, how do i tie the link table / class to the services table/class and similar tables/classes. thanks mark class Computer(Storm):     __storm_table__ = "computers"     id = Int(primary = True)     processes = ReferenceSet(id, "Service.computer_id")     group_id = Int()     name = Unicode()     def __init__(self, group_id, name):         self.group_id = group_id         <a href="http://self.name">self.name</a> = unicode(name) class Service(Storm):     __storm_table__ = "services"     id = Int(primary = True)     computer_id = Int()     caption = Unicode()     date = Datetime()     def __init__(self, date, **args):         self.caption = args['caption']         self.date = date class Group(Storm):     __storm_table__ = "groups"     id = Int(primary = True)     computers = ReferenceSet(id, "Computer.group_id")     name = Unicode()     def __init__(self,name):         <a href="http://self.name">self.name</a> = name         store.execute("CREATE TABLE groups " \         "(id INTEGER PRIMARY KEY, name VARCHAR)", \         noresult = True \         )         store.execute("CREATE TABLE computers "         "(id INTEGER PRIMARY KEY, group_id INTEGER, name VARCHAR)", \         noresult = True \         )         store.execute("CREATE TABLE services " \         "(id INTEGER PRIMARY KEY, computer_id VARCHAR, Caption VARCHAR, Date, DATETIME)", \         noresult = True \         )