Oracle Index Usage

Last week, Oracle released a http://www.aliyun.com/zixun/aggregation/8503.html "> Research Report on the effectiveness of data centers", and for most users, Oracle remains a data software provider , so the report looks really odd. 　　But after the acquisition of Sun, Oracle has indeed undergone a huge shift. First, let's take a closer look at the contents of this research report. Oracle in this report puts forward the so-called ...

Through the introduction of the core Distributed File System HDFS, MapReduce processing process of the Hadoop distributed computing platform, as well as the Data Warehouse tool hive and the distributed database HBase, it covers all the technical cores of the Hadoop distributed platform. Through this stage research summary, from the internal mechanism angle detailed analysis, HDFS, MapReduce, Hbase, Hive is how to run, as well as based on the Hadoop Data Warehouse construction and the distributed database interior concrete realization. If there are deficiencies, follow-up ...

Through the introduction of the core Distributed File System HDFS, MapReduce processing process of the Hadoop distributed computing platform, as well as the Data Warehouse tool hive and the distributed database HBase, it covers all the technical cores of the Hadoop distributed platform. Through this stage research summary, from the internal mechanism angle detailed analysis, HDFS, MapReduce, Hbase, Hive is how to run, as well as based on the Hadoop Data Warehouse construction and the distributed database interior concrete realization. If there are deficiencies, follow-up and ...

Editor's note: Jay Kreps, a chief engineer from LinkedIn, says that logs exist almost at the time of the computer's creation, and there is a wide range of uses in addition to distributed computing or abstract distributed computing models. In this paper, he describes the principles of the log and the use of the log as a separate service to achieve data integration, real-time data processing and distributed system design. Article content is very dry, worth learning. Here's the original: I joined the LinkedIn company at an exciting time six years ago. From that time ...

Editor's note: Jay Kreps, a chief engineer from LinkedIn, says that logs exist almost at the time of the computer's creation, and there is a wide range of uses in addition to distributed computing or abstract distributed computing models. In this paper, he describes the principles of the log and the use of the log as a separate service to achieve data integration, real-time data processing and distributed system design. Article content is very dry, worth learning. Here's the original: I joined the LinkedIn company at an exciting time six years ago. From that time ...

It was easy to choose a database two or three years ago. Well-funded companies will choose Oracle databases, and companies that use Microsoft products are usually SQL Server, while budget-less companies will choose MySQL. Now, however, the situation is much different. In the last two or three years, many companies have launched their own Open-source projects to store information. In many cases, these projects discard traditional relational database guidelines. Many people refer to these items as NoSQL, the abbreviation for "not only SQL." Although some NoSQL number ...

As social networking boomed, the Library of Congress had to deal with Twitter, which reached 133TB, and, thankfully, they had found a way to manage such data. As of now, the Library of Congress has kept the number of Twitter information has reached 170 billion, the volume of storage files to reach 133tb--because each piece of information has been shared and reproduced in this social network, the library's technical team needs to find a way to provide users with practical search solutions. In the current project report, the library Manager ...

My Chinese name is Yu Zhihong. In the HBase community, more people know about Ted Yu. has been a member of the HBase PMC since June 2011. At the HBTC 2012 conference, I was pleasantly surprised by the wide adoption of hbase in China. Famous companies such as Taobao, Huawei, Intel and IBM all recognise HBase. HBase has become a de facto nosql solution in the United States, a trend that is more pronounced in China. I am delighted to see the company's contribution to HBase. In the introduction NoSQL ...

As social networking boomed, the Library of Congress had to deal with Twitter, which reached 133TB, and, thankfully, they had found a way to manage such data. As of now, the Library of Congress has kept the number of Twitter information has reached 170 billion, the volume of storage files to reach 133tb--because each piece of information has been shared and reproduced in this social network, the library's technical team needs to find a way to provide users with practical search solutions. In the current project report, the library Manager ...

Development of cloud computing can not "follow suit" "Cloud flying over" - On the development of cloud computing several issues to be solved So far, China has set off a wave of cloud computing development. From the media's hype, the capital's campaign, to a large number of academic activities co-sponsored business promotion, has been desperate to heat up the concept of cloud computing. Coupled with Google, IBM, Microsoft and other IT giants with unprecedented speed and scale of cloud computing promotion and speculation, it is cloud computing on the peak. Cloud planning, cloud schemata, cloud projects, cloud base seems to have become a government at all levels ...