Relational schema and XML schema bidirectional mapping algorithm based on the intermediate object tree

In order to maintain the integrity of data information in heterogeneous data interaction more effectively, this paper firstly analyzed the advantages of XML Schema in the field of data exchange. And then the hierarchical logic structure of the object tree is used to represent the relational schema structure, proposed the bidirectional mapping algorithm based on the intermediate object tree, the relational schema and XML Schema bidirectional mapping rules are established. Finally, the proposed algorithm is realized according to the rules. The results show that the XML Schema generated by the mapping conforms to the W3C standard and can accurately transmit the referential integrity and the fields of semantic constraints between the relational schema tables.