Thanks again Arnar, I'm sorry for my stupidity and for the time that you loose for me. But I'm going crazy to understand everything. My brain is in overeating state ;-)) Speaking in sqlAlchemy code:
> > rules.. you should keep a table of days (with cols year, month, day) - > but since this is an easily recreatable dataset, no table is really > neccessary here. days=Table('days', metadata, Column('days_id', Integer, primary_key=True), Column('year', Integer), Column('month', Integer), Column('day', Integer)) instrument=Table('instruments', metadata, Column('instrument_id', Integer, primary_key=True), Column('name', String)) > planning=Table('planning', metadata, Column('planning_id', Integer, primary_key=True), Column('instrument_id', Integer,ForeignKey('instruments.instrument_id')), Column('days_id', Integer, ForeignKey('days.days_id')), Column('data', String)) I've already loose the way.... class Days(object): pass class Instrument(object): pass class Planning(object): pass mapper(Days, days) mapper(Instruments, instruments) mapper(Planning, planning, properties={ 'instruments' :relation(Instruments), 'days' : relation(Days)}) I think to be out of brain. Please, if you can help me I offer you a wonderful coffee if you come to Florence. -- ------------------------------------------------------------------- (o_ (o_ //\ Coltivate Linux che tanto Windows si pianta da solo. (/)_ V_/_ +------------------------------------------------------------------+ | ENRICO MORELLI | email: [EMAIL PROTECTED] | | * * * * | phone: +39 055 4574269 | | University of Florence | fax : +39 055 4574253 | | CERM - via Sacconi, 6 - 50019 Sesto Fiorentino (FI) - ITALY | +------------------------------------------------------------------+ ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Sqlalchemy-users mailing list Sqlalchemy-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sqlalchemy-users