what is star schema in data warehouse

of XML's popularity has been hard to verify, only known by the Java Enterprise application and the DOM (Document Object model) standard of the East wind. XML in Java enterprise applications is often used for the following purposes: Configuration file and transport format (SOAP, Simple Object Transfer Protocol). With the increase of Java application, the application of XML is also widening, but the whole

"milestones" that I have in mind. What is a milestone? ①"Milestone" is an important part of a set of knowledge system , no matter which tutorial, how to start learning, it will always be a level you must face. It may not be difficult, but if you want to go further in your ability, the milestone will not be around. ② across "milestones", technology can get a qual

, Simple Object Transfer Protocol). With the increase of Java application, the application of XML is also widening, but the whole is not out of these two aspects. if just as a key-value pair type configuration file format, XML is not good, its problem is that it contains too much for the real

what is archiving. When should you apply it? What is the best way to implement it. These are the problems that CIOs are facing right now, and these are the issues that this article is going to look at. 　　what

As you have heard or seen countless times of data mining, do you know what it is? Many scholars and experts have different definitions about what data mining is. The following are some common statements: Simply put,

prefer to use mysql directly. Next, R is open-source, so new theories are updated quickly. data Processing is very convenient, especially for data frame list. What are you missing? biomedicine and research in schools like to use R to solve problems? many non-IT people need

matlab, so it's troublesome to perform mathematical operations unless you buy an iml library, but it's used by pharmaceutical companies because of its authority (the boss is fda certified) in addition, the bank's risk control will also use sas. the advantage is that the proc SQL built in big data processing is good, b

Depending on the data mining that you've heard or seen countless times, do you know what that is? Many scholars and experts give different definitions of what data mining is, and here are a few common statements:"To put it simply,

What is JNDI? Jndi is the Java Naming and directory interface (Java naming and directory Interface), which is one of the important specifications in the EE specification, and many experts believe that there is no thorough understanding of the significance and role of Jndi, T

That's it. The core component of the large data development platform, the job scheduling system, then discusses one of the faces of the big Data development platform, the data visualization platform. Like a dispatch system, this is another system that many companies may want to build their own wheels ...

binding what is the application scenario, what needs the data model and the view can be mapped to each other, it may be you do not realize, now a lot of sites can see this idea brings great convenience, such as forms, When filling out or submitting a form, the interface will be based on the user's actions in a timely

requirements based on explicit rules and policy resources. This allows for a more agile, flexible, secure, and high-performance data center that leverages the underlying hardware.It should be noted that a simple virtualized data center is not a software-defined datacenter. One of the main goals of the SDDC is to suppo

1. What is the use of learning data structures? 2. Is it necessary to learn the algorithm? Reply content:Personally think data structure is one of the most important basic skills of programming! Learn the sequential table and lin

What is JSON? Data format prepared for JavaScriptNot yet understand what JSON is? After reading this article, you should be able to have a clearer idea of what JSON is.JSON is JavaScrip

processing logic, and the policy is different message processing (I want to write a special article later)ArticleDescribes the mechanisms and policies ). What data-driven programming can do: As shown in the preceding example, it can be applied to function-level design. At the same time, it can also be applied in program-level design. For example, a table-d