Oracle User Tables List

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Delve into the primary key issues of SQL Server tables

The logical design of database is a very broad problem. In this paper, the main key design of the table is discussed in the design of MS SQL Server, and the corresponding solutions are given. Primary key design status and problems about database table primary key design, in general, based on business requirements, based on business logic, the formation of primary key. For example, when sales to record sales, generally need two tables, one is the summary description of the sales list, records such as sales number, the total amount of a class of cases, and the other table record of each commodity ...

The unsafe factors of Oracle8 and some explanations

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 ...

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.

optimization of SQL Server database under large data volume

1.1: Increase the secondary data file from SQL SERVER 2005, the database does not default to generate NDF data files, generally have a main data file (MDF) is enough, but some large databases, because of information, and query frequently, so in order to improve the speed of query, You can store some of the records in a table or some of the tables in a different data file. Because the CPU and memory speed is much larger than the hard disk read and write speed, so you can put different data files on different physical hard drive, so that the execution of the query, ...

Analyze the large data processing function of Microsoft Hadooponazure

In large data technology, Apache Hadoop and MapReduce are the most user-focused. But it's not easy to manage a Hadoop Distributed file system, or to write MapReduce tasks in Java.      Then Apache hive may help you solve the problem. The Hive Data Warehouse tool is also a project of the Apache Foundation, one of the key components of the Hadoop ecosystem, which provides contextual query statements, i.e. hive queries ...

Design for Reading

With a growing number of Web fonts, paid Web font services, and off-the-shelf tools, typography takes back its title as the Queen of Design and is the key to all graphics and web design. Today, many designers in the design of typesetting, the main consideration is essentially aesthetic issues. The problem is that we are used to treating typography and font design as two interchangeable terms, but actually they are different. Take a quick look at the label "typography" on the dribbble and see the trend immediately. The perfect use of the temptation of font design will affect our trial ...

Chenhao: The performance technology of Web site caused by 12306.cn

Intermediary transaction SEO diagnosis Taobao Guest Cloud mainframe technology hall with the advent of the 11 long holiday, everyone to the Ministry of Railways 12306 of the discussion again. This article (original) from 12306 website extension to the site performance of a lot of discussion, for entrepreneurs and technology enthusiasts have a strong reference.   The author Chenhao (Weibo) has 14 years of experience in software development, 8 years of project and team management experience. 12306.cn website Hung, was scolded by the people all over the country. I've been here for two days.

Log analysis methods overview How to be simpler and more valuable

Intermediary transaction SEO diagnosis Taobao guest Cloud host Technology Hall log is a very broad concept in computer systems, and any program may output logs: Operating system kernel, various application servers, and so on.   The content, size and use of the log are different, it is difficult to generalize. The logs in the log processing method discussed in this article refer only to Web logs. There is no precise definition, which may include, but is not limited to, user access logs generated by various front-end Web servers--apache, LIGHTTPD, Tomcat, and ...

MySQL Application architecture evolution in large Web sites

As the most popular open source database, MySQL is widely used in Web applications and other small and medium-sized projects. However, in many large IT companies, MySQL has gradually deviated from the original open source version after being highly optimized and customized, more like a branch, such as the Webscalesql of Facebook, which was not long ago open source.   Recently, Mr. Xiong has published a blog post, from the perspective of large-scale web site architecture development of the changes in MySQL application, here for you to share. This article mainly describes the different and ...

SEM of medical website Technology Manual code standardization behind the need for humanity

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall the author in February 20 "The SEM medical SEO keyword strategy caters to the user search experience" the article to publish, has many medical SEO friends and the author has carried on the discussion to the medical profession keyword strategy, Some friends also put forward some strategies and views on the keyword anchor text for paid links. About the key words layout strategy, I think whether the main keyword or long tail keyword, no matter which one is the optimal ranking stage, we will find more or less keywords can be attracted to use ...

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