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The intermediary transaction SEO diagnoses Taobao guest Cloud host technology two articles in front of the hall--analysis premise-Data quality 1 and premise of analysis-data quality 2 The statistic information of data profiling is introduced, and the data auditing is used to evaluate whether it is stored In quality issues, the quality of the data can be reviewed through three aspects of completeness, accuracy and consistency. This article introduces the last piece-data correction

It is normal for websites to rise in rankings in search engines. Many owners in the treatment of this matter, in analyzing its causes, it is easy to go into some errors, once the site ranking dropped, they began to recall the past two days what changes have been made to the site, and firmly believe that the recent changes are the site The reason for the decline in rankings. If the site two days ago replaced the server, website ranking dropped a few days, and immediately think that changing the server rankings affect the site, but in fact the reason is not because you replaced the server, but because the new server is unstable, resulting in Website visit speed drops, often can not open etc ...

1, MySQL exists text and blob: (1), the same in the text or BLOB column storage or retrieval process, there is no case conversion, when not running in strict mode, if you assign a BLOB or text column exceeds the maximum length of the column type value, the value is intercepted to ensure that the appropriate. If the truncated character is not a space, a warning is generated. Using strict SQL mode produces an error, and the value is rejected rather than intercepted and given a warning. Blob and text columns cannot have default values. When a blob is saved or retrieved ...

It's been a while since we left the circle. But because the blog is still, or can occasionally receive some mail, last week, a classmate asked me: I am looking for a job, I see many recruitment instructions on the need for interactive designer interface design documents, what is the interface design document document? How do you write it? It made me think of it. In 2009, I also vigorously implemented the interactive documentation in the project (in the following article, abbreviated as DRD), the format is not limited, the interaction designers themselves write to the interface also line, the individual document is also the line, in short, so that interactive designers can not carry the interface information ...

This article describes how to set up a large number of spoke VPNs by using quick mode selector source definitions on the spoke FortiGates and the dialup VPN configurations on the hub FortiGates.

The intermediary transaction SEO diagnoses Taobao guest stationmaster buys cloud host technology Hall some friends in my blog homepage that article posts the following message to say this: "The website on-line time how to formulate the keyword strategy, for instance should establish what keyword in the prophase, in the middle and later should develop what keyword, How to develop a strategy for keyword optimization at different times to achieve the best optimization strategy? I think this sentence is very good, this is also a lot of just do SEO staff more confused place, not a complete optimization strategy, and you are exhausted on the internet ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall May 30 Beijing Morning News report, since 29th 0 o'clock, CN and China domain name again for personal open , which has aroused widespread concern in the industry, it is reported that the first day of registration is 20 times times the usual registration, it seems that the CN and Chinese domain name will be hot again, but in fact will be really hot?

Intermediary transaction SEO diagnosis Taobao guest Cloud host technology lobby E-commerce site optimization has become one of the most important electric network marketing strategy, a poor overall optimization of e-commerce sites, supply and demand information not only can not be retrieved in search engines, even within the site classification directory, site search, Navigation systems are difficult to be found by potential users, so E-commerce platform site business value is constantly shrinking, so the site optimization is an indispensable part of e-commerce sites must pay attention to, not only the site does not "business", then how in many ...

1. The introduction of the Hadoop Distributed File System (HDFS) is a distributed file system designed to be used on common hardware devices. It has many similarities to existing distributed file systems, but it is quite different from these file systems. HDFS is highly fault-tolerant and is designed to be deployed on inexpensive hardware. HDFS provides high throughput for application data and applies to large dataset applications. HDFs opens up some POSIX-required interfaces that allow streaming access to file system data. HDFS was originally for AP ...

The previous article introduced some basic concepts of data quality, data quality control as the basic link of Data Warehouse, is the foundation of guaranteeing the application of upper layer data. Data quality assurance consists mainly of data Profiling, data auditing and data revision (information correcting) three parts, the previous article describes the content of the information Profiling, Profiling the data in the process of obtaining the summary statistics, so the following ...