以下在所有表中都有唯一字段的数据库是ACCYEAR，BILLNO，BILLDATE。 如何获得两种不同的树结构，如下所示。
database name 'billing' table name: BillDetails |********************** |----------> fields (BILLNO: 1, AccYear: 13-14, BillDate : 03/04/2013, CUSTNAME_AND_ADDRESS: LEO,ZEON NAGARY) | |********************************************************************************************************* | | | |-------->table name: TransportDetails (record 1) | | | fields(Bill # : 1 | | | Acc_Year: 13-14 | | | Bill Date : 03/04/2013 | | | Transport Sl# : 1 | | | Trailer # : TXT 4568 | | | Driver # : DRIVER1) | | | | | | |---------->table name: Cargo Details: (record 1) | | | | fields(Bill # : 1 | | | | Acc_Year: 13-14 | | | | Bill Date : 03/04/2013 | | |-------------->| Transport Sl# : 1 | | | CargoSlNo:1 | | | CargoPkgs: 45 WoodenCrates) | | | | | |---------->table name: Cargo Details: (record 2) | | fields(Bill # : 1 | | Acc_Year: 13-14 | | Bill Date : 03/04/2013 | | Transport Sl# : 1 | | CargoSlNo:2 | | CargoPkgs: 20 PLTS) | | | |-------->table name: TransportDetails (record 2) | | fields(Bill # : 1 | | Acc_Year: 13-14 | | Bill Date : 03/04/2013 | | Transport Sl# : 2 | | Trailer # : TXZ 0541 | | Driver # : DRIVER2) | | | | |---------->table name: Cargo Details: (record 1) | | | fields(Bill # : 1 | | | Acc_Year: 13-14 | | | Bill Date : 03/04/2013 | |-------------->| Transport Sl# : 1 | | CargoSlNo:1 | | CargoPkgs: 52 CTNS) | | | |---------->table name: Cargo Details: (record 2) | fields(Bill # : 1 | Acc_Year: 13-14 | Bill Date : 03/04/2013 | Transport Sl# : 1 | CargoSlNo:2 | CargoPkgs: 10 BALES) | |--------------> table name: DocumentDetails (record 1) : | | Document-details-1: | | | | | | | |---table name: ProductDetails:(record 1)------>| table name: ProductDetails:(record 1) | | | | Name : ccc | | | | Manufacturer: pppp | | | | Price : 45000 | | | | | | | |---->|---TABLENAME:PODETAILS(RECORD 1) | | | |---TABLENAME:PODETAILS(RECORD 2) | | | | | | | | |------>| table name: ProductDetails:(record 2) | | | Name : GFFGH | | | Manufacturer: NUGK | | | Price : 1285000 | | | | | |---->|---TABLENAME:PODETAILS(RECORD 1) | | |---TABLENAME:PODETAILS(RECORD 2) | | | | | | | |---table name: ProductDetails:(record 2)-------|-------->| table name: ProductDetails:(record 2) | | | Name : ccc | | | Manufacturer: pppp | | | Price : 840000 | | | | | |---->|---TABLENAME:PODETAILS(RECORD 1) | | |---TABLENAME:PODETAILS(RECORD 2) | | | | | |-------->| table name: ProductDetails:(record 2) | | Name : GFFGH | | Manufacturer: NUGK | | Price : 950000 | | | |---->|---TABLENAME:PODETAILS(RECORD 1) | |---TABLENAME:PODETAILS(RECORD 2) | | | |-----------------> PAYMTDETAILS(multi records)