
70 Geographical Information Systems: Trends and Technologies
prefi x naming, for effi cient index maintenance and query processing.
Although the experiment of MD-HBase shows that the proposed indexing
method is effi cient for multi-dimensional data, it has some constraints.
Before describing these constraints, we have discovered a characteristic
of cloud managements for data access through experiments. A trade-off
exists between the number of points for getting one key and the number of
keys for scanning; a reduction in the number of points for getting one key
results in an increase in the number of keys for scanning and vice versa.
The way of ...