Step By Step Database Design

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Virtual Host Station "Step by step meticulously" become the website "Guardian God"

According to foreign media reports, October 8 this year, a hacker group announced that the organization recently invaded the world's 100 university servers, the theft of a hundred thousand of of account information, and the public, causing panic among netizens. Why can hackers attack University servers and cause passwords to leak out? According to the expert analysis, this "leaks the door" incident is the hacker attacks the university's virtual host server to cause the password to leak out. A strict set of permissions to the server can guarantee the security of each virtual host, and the lax permissions set on the virtual host is often vulnerable to hackers attack. In recent years, virtual owners ...

Teach you step-by-step encryption and decryption technology--software protection Technology (1) (1)

6th chapter of software Protection techniques common Protection skills 1, serial number mode (1) Serial number protection mechanism mathematical algorithm is the core of password encryption, but in general software encryption, it does not seem to be very concerned about, because most of the time the software encryption itself to achieve a programming skill. But in recent years with the popularity of serial number encryption programs, the proportion of mathematical algorithms in software encryption seems to be getting bigger. Let's take a look at the way the serial number encryption works on the network. When a user downloads a shareware--share software from the network, ...

Some principles needing attention in design of large database

A good database product is not equal to have a good application system, if can not design a reasonable database model, not only will increase the client and Server section program programming and maintenance of the difficulty, and will affect the actual performance of the system. Generally speaking, in an MIS system analysis, design, test and trial run stage, because the data quantity is small, designers and testers often only notice the realization of the function, but it is difficult to notice the weak performance, until the system put into actual operation for some time, only to find that the performance of the system is decreasing, At this point to consider improving the performance of the system will cost more ...

Website construction indispensable final step site test

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall an article "understands the customer constructs the station demand is the website construction takes the successful first step" the author like everybody introduced in the website construction first step. I believe that I have seen friends are not unfamiliar, and today I would like to say is also the site construction of an indispensable step, but also the last step of website construction-site testing. Because after testing the site, you can deliver the site to the customer. So it is called the last step of website construction, so it becomes more important. Website construction is in accordance with customer requirements, website building ...

Oracle Database Performance Optimization

In fact, in order to ensure the Oracle database running in the best performance state, the database optimization strategy should be considered before the http://www.aliyun.com/zixun/aggregation/32730.html "> Information system development." Optimization strategy generally includes server operating system parameter adjustment, Oracle database parameter adjustment, network performance adjustment, application SQL statement analysis and design, in which the application analysis and design is before the information system development ...

Using hive to build a database to prepare for the big data age

Storing them is a good choice when you need to work with a lot of data. An incredible discovery or future prediction will not come from unused data. Big data is a complex monster. Writing complex MapReduce programs in the Java programming language takes a lot of time, good resources and expertise, which is what most businesses don't have.   This is why building a database with tools such as Hive on Hadoop can be a powerful solution. Peter J Jamack is a ...

Five-step implementation of cloud computing PAAs security

When it comes to security and cloud computing models, the platform as a service (PaaS) has its own special challenges. Unlike other cloud computing models, PAAs security requires application security expertise that most companies can not invest heavily in. This is a complex issue because many companies use the "cantonment" infrastructure-level security control strategy as a response to application-level security risks (for example, once the application code releases production, use WAF to mitigate the discovery of cross-site scripting or other front-end problems). Due to the lack of PAAs ...

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.

Power Cloud Box makes the first step in cloud computing easy

When more and more companies are moving towards private cloud, the first problem they face, and perhaps the most troubling, is how to "pool" existing resources through virtualization. Recently, IBM launched the IBM Power Cloud box solution, through the power server, POWERVM virtual machine, BAE Director Vmcontrol management platform of the perfect combination of three, you can easily resolve the problem of enterprise user resource pooling. Let enterprises easily take the first ...

Understanding customer site Requirements is the first step in building a successful website

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall in the website construction, the first step needs to do is the thorough understanding customer's demand, does not have the thorough understanding to the customer demand, the following website construction work will be impossible to carry out. This step is related to the success or failure of the entire website project construction, but also relates to the entire website construction need time length. The customer's website needs to understand thoroughly, communicate well with customers, for the next step of the site construction work, not only will shorten the construction cycle of the role, but also reduce rework, tardiness. In the understanding of the site to customers ...

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