What Is Deadlock In Database

Introduction with the advent of the cloud computing era, various types of Internet applications are emerging, the relevant data model, distributed architecture, data storage and other database related technical indicators also put forward new requirements. Although the traditional relational database has occupied the unshakable position in the data storage, but because of its inherent limitation, has been unable to satisfy the cloud computing age to the data expansion, reads and writes the speed, the support capacity as well as the construction and the operation cost request. The era of cloud computing has put forward a new demand for database technology, which is mainly manifested in the following aspects. Mass data processing: to ...

I am pleased to announce that Windows http://www.aliyun.com/zixun/aggregation/13357.html ">azure SQL database two new system views are now available immediately, It provides diagnostic tracking information for the cloud database. In your SQL database server's primary database, you now have the following new system views to use: View location details Sys.event_log Master to users from the system ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host Technology Hall database system common four kinds of failures are mainly internal fault, system failure, Media failure and computer virus failure, corresponding to each type of failure have different solutions. 　　  A transaction failure indicates that the transaction ended without a commit or revocation, so the database may be in an inaccurate state. ...

"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. ...

NoSQL systems generally advertise a feature that is good performance and then why? relational database has developed for so many years, various optimization work has been done very deep, nosql system is generally absorbing relational database technology, and then, in the end what is the constraints on the performance of relational database? We look at this problem from the perspective of http://www.aliyun.com/zixun/aggregation/9344.html "> System design." 1, index support. Relational data ...

As an outstanding representative of the Object relational database, Oracle is undoubtedly the most powerful. Whether it's the size of the database, the support of multimedia data types, the parallelism of SQL operations replication, or the security services, Oracle is much stronger than Sybase, Informix, Added to the latest version of the Oracle8.0.4 is to enhance the characteristics of this, but also introduced a number of new features, such as: Data partitioning (partitioning), Object-relational technology (objects relational T ...

This two-day machine is broken, is being sent to repair, write a series of large http://www.aliyun.com/zixun/aggregation/11116.html "> website architecture articles, 　　Hope to have a career in the Internet to make some of the webmaster friends help. Note: The large Web site architecture here only includes highly interactive and highly interactive data-type large Web sites, based on well-known reasons, we do not talk about the news class and some rely on HTML static can be implemented architecture, ...

Will our future be in the hands of big data? As long as we encounter incomprehensible things, we will say that it is accidental, it seems that this seemingly accidental action has contributed to the evolution of history, and the twists and turns of things seems to be like the dice. But what does this chance really mean? And French mathematician Poisson points out that once we admit that human behavior is the most random, it can suddenly be predicted. Paradox? In fact, one of the most appropriate examples is the dice: Although the number of points can not be predicted each time, but the overall law can follow. That is, about 5 to 7 of each throw ...

When using the traditional "advertising + sales + stores" development of growth encountered difficulties, corporate marketers naturally think through E-commerce, e-mail, mail-order and telemarketing, as well as sales of advertising (such as television shopping) for marketing and direct sales, but why some enterprises harvest is only a flash in the pan, And some companies have broken through the dilemma, gaining sustained sales and profit growth, and even created a new business model to get the explosion of the line of growth? This article attempts to through some of our consulting cases and familiar with the enterprise case, opened the use of direct duplex marketing success ...

The SQL Azure database is a relational database service provided by Microsoft based on cloud technology. Cloud-based Data solutions can offer many benefits, including fast provisioning, more economical scalability, high availability, and reduced management overhead. 　　This article describes the dynamic management views available in SQL Azure and how to speak them for troubleshooting. Performance considerations SQL Azure uses the SQL Server 2008 data engine as the core. SQL Server 20 ...