In such systems, data generated by a camera sensor may be named:
US/Universities/USC/CS/cameral
The name is divided into five hierarchies. The first four hierarchies are used
to specify the location of the sensor while the last hierarchy is used to specify
the type of the data. On the other hand, some systems use an attribute-value
naming scheme. In such systems, the data generated by the camera sensor in
the previous example would be named:
297
Jinbao Li, Zhipeng Cai, and Jianzhong Li
type = camera
value = image.jpg
location = ???CS Dept, Univ. of Southern California???
These naming schemes implicitly define a set of ways in which the data
may be accessed. The hierarchical naming scheme used by the above camera
sensor implicitly defines the following accessing methods:
1. Accessing the camera sensor data within all US universities;
2. Accessing the camera sensor data within a given US university;
3. Accessing the camera sensor data in the computer science department of
a given US university.
4.2 The Performance of Data-centric Storage Systems
Data names are used when storing and receiving data in data centric storage.
It uses a mapping between a sensor and the name of a data to store the data.
Figure 4 describes such a data centric storage algorithm [16, 18]. Assume
sensor nodes A and B want to insert a data named bird-sighting and this
data is hashed to node C, so the data is routed to node C by the routing
protocol.
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