Cross-ontology multi-master replication

One or more non-transitory computer readable storage media storing instructions which, when executed, cause performance of:

• storing a database change comprising a property value, the property value having an exporting site property type as defined in an exporting site ontology for an exporting site;
• mapping the exporting site property type to an importing site property type defined by an importing site ontology for an importing site based on an ontology map comprising a one-to-one mapping between data types defined by the exporting site ontology and data types defined by the importing site ontology;
• transforming the property value to an intermediate property value based on the importing site property type to simulate incorporating the property value into the importing site;
• transforming the intermediate property value to a first round-trip value based on the exporting site property type to simulate incorporating the intermediate property value into the exporting site;
• determining that the property value and the first round-trip value are different;
• transforming the first round-trip value to a second intermediate value based on the importing site property type;
• transforming the second intermediate value to a second round-trip value based on the exporting site property type;
• determining whether to export the database change to the importing site based at least in part on a comparison between the first round-trip value and the second round-trip value;
• exporting the database change to the importing site when the first round-trip value and the second round-trip value match.

A system comprising:

• one or more processors;
• one or more non-transitory computer readable storage media coupled to the one or more processors and comprising logic configured to:
• store a database change comprising a property value, the property value having an exporting site property type as defined in an exporting site ontology for an exporting site;
• map the exporting site property type to an importing site property type defined by an importing site ontology for an importing site based on an ontology map comprising a one-to-one mapping between data types defined by the exporting site ontology and data types defined by the importing site ontology;
• transform the property value to an intermediate property value based on the importing site property type to simulate incorporating the property value into the importing site;
• transform the intermediate property value to a first round-trip value based on the exporting site property type to simulate incorporating the intermediate property value into the exporting site;
• determining that the property value and the first round-trip value are different;
• transforming the first round-trip value to a second intermediate value based on the importing site property type;
• transforming the second intermediate value to a second round-trip value based on the exporting site property type;
• determining whether to export the database change to the importing site based at least in part on a comparison between the first round-trip value and the second round-trip value;
• exporting the database change to the importing site when the first round-trip value and the second round-trip value match.