| B. Sreenath and S. Seshadri, The hcC-tree: An efficient |
....techniques have been proposed that Object Vehicle Animal car van cat dog Figure 3: A Class Hierarchy. Class Object f char name; void texture; void shape; void color; list ids; fall the image ids which contain the objectg g; Table 2: An Abstract Object. exploit the class hierarchies [4, 5, 6, 7]. The scope of an objectoriented query can be restricted to a particular class (accessing the shallow extent) for example, targeting at cat only, or expanded to include some or all classes in the hierarchy rooted in that class (accessing the deep extent) targeting at Animal and all its ....
B. Sreenath and S. Seshadri, The hcC-tree: An efficient
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