Description: bigtable is designed to store large-scale distribution of structured data, by design, it can be extended to the 2 ^ 50 bytes, distributed in the thousands of ordinary server. Google' s many projects using BT to store data, including Web queries, google earth and google finance. These applications on BT' s requirements are different: data size (from the URL to a Web page to satellite images) in different reaction at different speeds (from the large number of back-end processing to real-time data services). For different requirements, BT have successfully provided a flexible and efficient service. In this article, we will describe BT' s data model. This data model allows users to dynamically control the distribution and structure of data
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