1. A method comprising, by one or more computer systems: receiving a query for particular sensor data among a plurality of sensor data from a plurality of sensors, the plurality of sensor data being indexed according to a multi-dimensional array, one or more first ones of the dimensions comprising time and one or more second ones of the dimensions comprising one or more pre-determined sensor-data attributes; translating the query to correspond to the indexing of the plurality of sensor data, the translated query comprising one or more values for one or more of the dimensions of the multi-dimensional array; and communicating the translated query to search among the plurality of sensor data according to its indexing to identify the particular sensor data.