Environmental element event data query method and system based on heterogeneous database
A technology of environmental elements and event data, applied in the field of database query, can solve problems such as data synchronization and achieve good versatility
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Embodiment 1
[0026] refer to figure 1 As shown, the present invention provides a method for querying environmental element event data based on a heterogeneous database. The method is carried out based on a pre-established environmental element event database and an environmental Internet of Things system metadata database. The environmental element event database includes environmental elements Information, specifically the indicator description and indicator standard name corresponding to the environmental element event, the metadata database of the environmental Internet of things system includes the relevant information of the data storage layer in each environmental Internet of things system, and the data storage layer is stored in the environmental Internet of things system A database of environmental data, in this embodiment, it is a database for storing data information corresponding to environmental element events, and the relevant information of the data storage layer specifically ...
Embodiment 2
[0055] refer to figure 2 As shown, the present invention also provides a heterogeneous database-based environmental element event data query system, including an environmental element event database, an environmental Internet of Things system meta database, an environmental Internet of Things system, a unified query interface, a processor, a memory, and A computer program stored in the memory and operable on the processor, when the processor executes the computer program, implements the steps in the above method embodiment of Embodiment 1 of the present invention.
[0056] Specifically, the processor in this embodiment includes an event query module, a query conversion module, and a query execution module, and the unified query interface includes an environmental element event input module and a result display module.
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