User Defined Fields Database Design

The concept of blockchain to technology has been around for a long time, but with the heat of the past two years, it has gradually become known by the market and many technicians.

Designing 1 applications doesn't seem to be difficult, but it's not easy to achieve the optimal performance of the system. There are many choices in development tools, database design, application structure, query design, interface selection, and so on, depending on the specific application requirements and the skills of the development team. This article takes SQL Server as an example, discusses the application performance optimization techniques from the perspective of the background database, and gives some useful suggestions. 1 database design to achieve optimal performance in a good SQL Server scenario, the key is to have 1 ...

We believe that the goal-oriented design method consists of 4 p, i.e. process, pattern, principles, practices (processes, patterns, principles, practices), and I will discuss the first 3 p. Interaction design is generally a difficult and messy task, and interaction designers are often asked to imagine and define in a tight schedule a possible use of the latest technology, and no one has seen, we must have a deep understanding of the complex areas of products, must balance the competitive priorities, Must understand the constraints of the technology used and the machine ...

This article from the original is the country Kenji students in Zhejiang University translation, the original author: Jamie Appleseed, view the original if you can not pay, he will not be able to buy anything from you, and therefore supports a wide variety of payment options to ensure that users can pay you. However, in our study of payment availability, finding that providing multiple payment methods for users introduces complexity into the payment process and must be carefully designed to avoid confusion and choice difficulties. For international websites, supporting a wide variety of payment methods is not just a matter of user preference.

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 ...

In this lesson, we want to learn how to increase the intelligent processing capacity of the Web page. Basic functions Welcome to the third and final lesson of this tutorial. If you've learned the first and second lessons, you've mastered the basics of installing and programming MySQL and PHP. Here are some of the other functions of PHP that might be useful to you and make your development process simpler. 　　First, let's look at the document. You should know some basic concepts of the header file, right? The header file is an external file whose contents are included in the main program. ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall Openbiz Architecture openbiz Framework is designed to enable the design, development and maintenance of networks should Use the procedure to change quickly and conveniently. The main innovation of openbiz architecture is its metadata based design. This means that the Openbiz object is created based on the description in the metadata file ...

Zhang Fubo: The following part of the forum is mainly four guests, talk about cloud practice. Beijing First Letter Group is the Beijing government's integration company, mainly responsible for the capital window of the construction, they are also in the domestic, in the government industry earlier in a company, as the first letter Group Technical Support Center General Manager Zhang Ninglai for us to do the report. Zhang: Good afternoon, we have just introduced, I am from Beijing First Letter Development Co., Ltd., I bring today is the result of our practice in cloud computing technology these years. Today is mainly divided into three parts, we mainly do is the field of e-government applications, we are mainly ...

As can be seen from the figure, the entire double eleven order processing process mainly involves three systems: platform (Tmall, Taobao), ERP/OMS (used to process orders), WMS (package, delivery within the warehouse).

Fourth Chapter online Retail payment settlement currency: Electronic money electronic money as the latest currency form, since the 1970s, its application has been more and more extensive. E-Money is the payment currency that the main parties of the network retail transaction use to complete the exchange. Without E-commerce, there would be no electronic money. Similarly, there is no electronic commerce without electronic money. [1] Electronic money overview One, the development of electronic money business at home and abroad, the development of electronic money in the late the 1990s, and has been widely concerned by the public and the official institutions.