A method for creating an index of network data for a set of message data, the index being arranged for searching the set of message data. A number of candidate tables are identified for the database, the tables having a plurality of attributes. A pushbutton switch and a battery compartment are enclosed within a waterproof enclosure formed between the upper and lower discs. The residual capacity of the battery is detected. No additional persistence on top needs to be implemented. The distributed network includes at least one gateway server configured for receiving meter data from one or more nodes of a distributed meter network and at least one subscriber station in communication with the at least one gateway server via a communication network.