what is adfs

what circumstances are indexes, but not used?Indexes do not always take effect, such as the following, which will invalidate the index : If there is or in the condition, even if some of the conditions in the index are not used ( which is why the use of or is minimized ), in the example user_id no index

The Linux kernel needs to manage all the hardware devices connected to the computer, which is undoubtedly part of it. To manage these devices, you must first communicate with them. Generally, there are two solutions to achieve this function:1. Polling allows the kernel to regularly query the device status and then process the status accordingly;2. Interrupt enables the hardware to send signals to the kernel as needed (switch the kernel to the hardware

1. What is C #:Solution 1:c# is a development language, is from C and C + + evolved, a friend play called "C Four +", here the "#" number, do not read "Well", and read " sharp" I find in the online Chinese reading method called "Sharpe" also do not know right or not, HoHo and brought it, The Chinese translation means "

With the development of the network, VoIP services and unified communication platforms become more and more important. The SIP protocol is an exciting focus. Some may ask, what is the SIP protocol? What's better about it? Here we will go into more details. The Chinese meaning of the SIP protocol is the process initiali

What this article brings to you is about what is BFC? What is the use of BFC in CSS? , there is a certain reference value, the need for friends can refer to, I hope you have some help.

The question is not just what you have, what you say, but how you pack it. Unless you can communicate and share with them, you have the best idea, the most coolCode, Or a better architecture will eventually be fruitless. As a developer, we must communicate with each other. Communicate with customers, demand analysts, project managers, technical directors, boss,

A sentence to understand what is called data structure and algorithm, try to let people who do not understand the program can understand This issue has been closed due to non-development-related issues directly Reply content: A sentence to understand what is called data structure and algorithm, try to let people

What is LinuxThe same set of operating systems cannot be run on a platform of different architectures.Refer to the HARDWARE function function and modify your operating system program code, the revised operating system will be able to run on another hardware platform. This is the software migration .Linux is an open-sou

What is the basic computer system and what is the basic computer system? What's the operating system? First, we need to know,Why is there an operating system?. A modern computer system consists of one or more processors, primary storage, hard disk, keyboard, mouse, display,

What is the role of the hook function in thinkphp? What business logic is generally used for processing? Reply content: What is the role of the hook function in thinkphp? What busi

What is a Blog? What is RSS? News aggregation toolArron posted on 1:08:13What is a Blog?-Blog, short for Weblog.-Weblog: a combination of Web and Log. Web refers to World Wide Web; Log, which is originally defined as "Marine

How do I abstract a class? Why abstract classes? What is the role? What is polymorphic? How to achieve polymorphism? In writing, we talk about how we understand these characteristics of object-oriented. Reply to discussion (solution) Since it's a discussion, let's talk about your opinion first. Abstraction

This article mainly introduces what is pear? What is pecl? Two confusing concepts in PHP explain the differences in concise language, the need for friends can refer to the Overview About PEAR,PECL These two things, beginner PHP when you know, but it seems to use people rarely add to the previous

What is Flex? What is the relationship between flex and flash? (Transfer) Flex is the presentation server (presentation Service) released by Macromedia. It is a java web iner or. for an application of net Server, the. mxmlfile (pu

One. What Ajax is: 1. With asynchronous mode, the user experience is improved by 2. Optimizes the transfer between browser and server, reduces unnecessary data round-trip, and reduces bandwidth consumption by 3. Ajax runs on the client side, assuming some of the work that would otherwise have been done by the server, reducing the load on the server under a large

prevent inconsistent data. Database at design time, the primary key plays a very important role.The primary key guarantees that the record is unique and the primary key domain is not empty, and the database management system automatically generates a unique index for the primary key, so the primary key is also a special index.2. There can be multiple unique inde

decoding GPU/VPU has become the main operation.☆ What are the advantages of hard decoding?Many of the old computer friends have this experience, playing high-definition video when the screen will jump frame (just like a slideshow), the sound is intermittent, but after the decoding work to the new graphics card, the CPU can be freed up to do more things, while also reducing the overall power consumption, th

What is a shell? What does bash do? What's the matter?The shell is the interface between you (the user) and Linux (or, more accurately, you and the Linux kernel). Each command you enter at the prompt is interpreted by the shell before being passed to the Linux kernel.The she

"What is missing in China and what is missing in Japan"--KandoWhat China lacks:1. High-quality service2. A coherent spirit of solidarity3. Delicate technologyWhat Japan lacks:1. Responsibility2. The power of the young3. A broad World VisionChina's enterprises are full of vitality, but the mobility of personnel

does not involve design patterns, architecture, efficiency and other issues. Or Google first, to see what the Web front-end development, Web backend development, respectively. Web front-end: As the name suggests is to do the front-end of the web. What we are talking about here is the front end of the web, where the