Blockchain-based data storage and query method and device

A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

• receiving, by a blockchain node, a service request, the service request comprising one or more data types and respective service data corresponding to the one or more data types that are stored in a blockchain;
• determining at least one of a service type or identification information corresponding to the service request;
• parsing the service request to obtain each data type of the service request and service data corresponding to each data type;
• and
• storing, based on a mapping relationship between a data type and service data, the service data that is obtained through parsing in a relational database corresponding to the blockchain node.

A computer-implemented system, comprising:

• one or more computers;
• and
• one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising:
• receiving, by a blockchain node, a service request, the service request comprising one or more data types and respective service data corresponding to the one or more data types that are stored in a blockchain;
• determining at least one of a service type or identification information corresponding to the service request;
• parsing the service request to obtain each data type of the service request and service data corresponding to each data type;
• and
• storing, based on a mapping relationship between a data type and service data, the service data that is obtained through parsing in a relational database corresponding to the blockchain node.