Abstract: Providing access to sensor data from devices within a physical space includes identifying areas and sub-areas of the physical space. Based on the areas and sub-areas, a hierarchical graph is generated describing a topology of the physical space. A node for each area and sub-area, each device located within the physical space, and each user associated with an area, sub-area, or device is generated. A device associated with a particular area or sub-area is identified. The device includes a sensor generating data. A device node associated with the device is generated within the hierarchical graph. The device node is a sub-node of a node corresponding to the particular area or sub-area. A database that stores sensor data for each device located within the physical space is generated. Sensor data is provided for the device. The hierarchical graph is used to identify the device within the particular area or sub-area, and to identify sensor data corresponding to the device.