Cross-table value calculation system and method

The invention relates to the technical field of software numerical calculation, in particular to a cross-table value calculation system and method. The system comprises a table association setting module, a table structure defining module, a calculation scheme module, a data acquisition module, and a calculation implementing module for implementing the calculation scheme module, wherein the tableassociation setting module, the table structure defining module, the calculation scheme module, the data acquisition module and the calculation implementing module are connected according to a logic sequence in the system. The table association setting module is used for managing and maintaining data sets, data forms and data form association relationships; the table structure defining module is used for self-defining various data table structures by customers, and the data tables include self-defined tables defined by the customers and basic tables preset by the system; the calculation schememodule is used for settin