Oracle Database Sql Reference

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Recent advances in SQL on Hadoop and 7 related technology sharing

The greatest fascination with large data is the new business value that comes from technical analysis and excavation. SQL on Hadoop is a critical direction. CSDN Cloud specifically invited Liang to write this article, to the 7 of the latest technology to do in-depth elaboration. The article is longer, but I believe there must be a harvest. December 5, 2013-6th, "application-driven architecture and technology" as the theme of the seventh session of China Large Data technology conference (DA data Marvell Conference 2013,BDTC 2013) before the meeting, ...

Alipay supports the technical realization of the peak of database request for double eleven 42 million times / sec

After more than eight years of practice, from Taobao's collection business to today to support all of Alipay's core business, and in the annual "Double Eleven Singles Day" continue to create a world record for the transaction database peak processing capacity.

MySQL and PostgreSQL: which open source database to choose? Which one is better?

Naresh Kumar is a software engineer and enthusiastic blogger, passionate and interested in programming and new things.   Recently, Naresh wrote a blog, the open source world's two most common database MySQL and PostgreSQL characteristics of the detailed analysis and comparison. If you're going to choose a free, open source database for your project, you may be hesitant between MySQL and PostgreSQL. MySQL and PostgreSQL are free, open source, powerful, and feature-rich databases ...

Summary of NoSQL Database

"IT168" I have always felt that nosql in fact very easy to understand, I have also had a very in-depth study of NoSQL, but in the recent preparation of yuntable chart, found that NoSQL not only very profound,   And my personal understanding of NoSQL is only superficial, but I am still a "shame and then Yong" people, so after a period of study, from the sixth part of this series, will talk to you nosql, and this article will be the main to do a NoSQL database review. ...

Comparative analysis of online Access database management tools

Http://www.aliyun.com/zixun/aggregation/11208.html ">microsoft Office Access (formerly known as Microsoft Access) is a relational database management system published by Microsoft. Combined with the Microsoft Jet Database Engine and graphical user interface features, it is one of the members of Microsoft Office. ...

NI: Domestic database shoulders The important mission of cloud security

Recently, the Chinese Academy of Engineering Academician NI received an interview with Sadie NET, this interview is "Jin Cang have about" series of interview programs. Cless in recent years to promote domestic CPU, domestic software and other independent intellectual property products, and to promote the formulation of relevant industrial policy suggestions. He pointed out that the most important guarantee cloud security problem is to achieve autonomous control, which is bound to use the domestic basic software.   Cloud security ultimately to the implementation of data security, the current domestic database in the security level has overtaken foreign. It is understood that currently includes Oracle, SQL Server, DB ...

Dzo 3.1.0 Publishing Database object handlers

Dzo is a database object that processes the source code of the application in the same way, and can develop, revise http://www.aliyun.com/zixun/aggregation/9591.html "> Version control and deploy the application. Dzo uses a text file to create local statements for all database objects and compares them to the actual database schema. Dzo can create SQL statements that need to update the database schema (or you can let Dzo execute SQL statements directly). If in ...

Double 11 Data Operation Platform Order Feed Data Torrent Real-Time Analysis Solution

In 2017, the double eleven refreshed the record again. The transaction created a peak of 325,000 pens/second and a peak payment of 256,000 pens/second. Such transactions and payment records will form a real-time order feed data stream, which will be imported into the active service system of the data operation platform.

Construction of disaster tolerance mode in dual data center

Content Summary: The data disaster tolerance problem is the government, the enterprise and so on in the informationization construction process to be confronted with the important theory and the practical significance research topic. In order to realize the disaster tolerance, it is necessary to design and research the disaster-tolerant related technology, the requirement analysis of business system, the overall scheme design and system realization of disaster tolerance.   Based on the current situation of Xinjiang National Tax Service and the target of future disaster tolerance construction, this paper expounds the concept and technical essentials of disaster tolerance, focuses on the analysis of the business data processing of Xinjiang national tax, puts forward the concrete disaster-tolerant solution, and gives the test example. Key words: ...

Detailed Hadoop core architecture

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 ...

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