Comparison Between Databases

Into the 2014, big data from the red media concept of speculation gradually landed into a wealth of industry. The large data service providers springing up in the Chinese market have launched a fierce competition. From "China's large data service provider comprehensive services level TOP100 list" (hereinafter referred to as the list), has been able to vaguely see the Chinese "large data cloud" embryonic. China and the United States "large data cloud" structure compared to the U.S. similar list, the highest ranked 10Gen only ranked 43rd, while the Big Data stock star tableau only 45th, and Marketo simply did not list. ...

Sweep 18 Major databases: 12 species of sql+6 nosql remember that two or three years ago there were only a few cloud platform vendors to choose from, it seems that there is not much cloud database in the market. But after the cloud boomed, the cloud database also appeared to be springing up. And what is really reliable and easy to use, for users, and bad analysis. So, this paper analyzes the usability and application direction of 18 kinds of databases (note that the Management database service is not the database instance that still requires user management and implementation). There are still deficiencies, I hope to hear more ...

"IT168 Live Report" December 6, 2012 news, TechEd 2012 Microsoft technical Conference into the last day of the agenda. Microsoft Technical Conference has been successfully held in China for the 19th consecutive year as Microsoft's top technology event in Asia Pacific. 　　Microsoft technology Conference with a number of star products, the formation of a powerful new technology lineup, unveiled a new era of technology. TechEd brings together developers and IT professionals from around the world, providing technology sharing, community interaction and product assessment resources for the largest technology event, with thousands of Microsoft ...

Comparison of 8 kinds of NoSQL database system: Kristóf Kovács Editor: Agile translation: Tang Yuhua share: More: Kristóf Kovács is a software architect and consultant who recently published an article comparing various types of NoSQL databases. The article is compiled by Agile translation-Tang Yuhua. If you want to reprint, please refer to the text after the declaration. Although SQL database is very useful ...

Datax is a tool for high-speed data exchange between heterogeneous database/file systems, which implements the http://www.aliyun.com/zixun/aggregation/34332.html "> processing system in arbitrary data" (rdbms/ Hdfs/local filesystem data Exchange, by the Taobao data Platform department completed. Sqoop is a tool used to transfer data from Hadoop and relational databases to one another ...

Author: Wu Shifu American Road Nasgrov City CIO This June, I had the honor to attend the "China Excellent CIO Decade Summit" held in Sanya, China. As can be seen from the two-day meeting, cloud computing is a hot topic in the current domestic it field. I work in the United States, obviously not in the ranks of the Chinese CIO. But to see the domestic peers in it and professional level of enthusiasm for the development of China's it happy. 　　Close-up of an article to join in the fun. The purpose of this article is to provide a practical for our domestic counterparts by comparing the application and implementation of cloud computing in China and America.

Hive on Mapreduce Hive on Mapreduce execution Process Execution process detailed parsing step 1:ui (user interface) invokes ExecuteQuery interface, sending HQL query to Driver step 2:driver Create a session handle for the query statement and send the query statement to Compiler for statement resolution and build execution Plan step 3 and 4:compil ...

With the rise of internet web2.0 websites, the relational database has become a very hot new field, the development of the non relational database products is very rapid. 　　But the traditional relational database in dealing with web2.0 website, especially the super large-scale and high concurrent SNS type web2.0 pure dynamic website already appeared to be powerless, has exposed many insurmountable problems, for example: 1, high configured--to the database higher concurrent reads and writes the demand WEB2.0 website to be based on user personalized information to generate real-time dynamic ...

The concept of blockchain to technology has been around for a long time, but with the heat of the past two years, it has gradually become known by the market and many technicians.

1. Languages used in COUCHDB: Erlang features: DB consistency, easy to use license: Apache protocol: http/rest bidirectional data replication, continuous or temporary processing, processing with conflict checking, therefore, The use of Master-master replication (see note 2) mvcc– write without blocking read operation Pre-save version crash-only (reliable) design requires data compression view: Embedded mapping/Reduce formatted view: List display support for server ...