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MYSQL must know the first chapter (BASICS) of Reading Notes, mysql must know 1.1 What is a database A database is a collection of data stored in an organized manner. A container that stores organized data (usually a file or a group of files) Note: people usually use databases to represent the database software they use. In fact, this is incorrect. Specifically, database software should become a DBMS (Databa

, ((Someattribute) attr). someone); - } the } - } - Console.read (); - } + } - Public classTest + { A [Some (SOMEONE.A)] at Public voidAmethod () - { } - [Some (someone.b)] - Public voidBmethod () - { } - [Some (someone.c)] in Public voidCmethod () - { } to } + [AttributeUsage (AttributeTargets.All)] - Public classSomeattribute:attribute the { * $

The WEB must know -- the illustration Http (on), the web must know This article summarizes the relevant knowledge about http. The main content of this article is as follows: The main explanations include: 1. The difference between a URL and a URI. 2. The request message and the content of the corresponding message. 3. Difference Between GET and POST. 4. http cookie, persistence, pipeline, multi-part object

I want to learn more about Python, know more about list, and know more about list. List Parsing Let's take a look at the following example. In this example, we want to get the square of each integer from 1 to 9 and put the result in the list to print it out. >>> power2 = []>>> for i in range(1,10):... power2.append(i*i)... >>> power2[1, 4, 9, 16, 25, 36, 49, 64, 81] Python has a very interesting function,

You do not know Static, do not know Static Static field, Static method, Static code block YiIntroduction In some scenarios, multiple instances of a class are required to share a member variable. Sometimes, you want to define methods that are not associated with a specific object and can be called without a new one. Example: WriteLine of the Console class, Show of MessageBox. In this case, static data is use

You do not know the character set and encoding (encoding and character set encoding), but do not know the encoding character set. In my previous article, a friend proposed the differences between character sets and encoding. I will discuss it with you here. The difference between character set and encoding is actually the difference between the encoding Character Set and character set encoding. In fact, if

ExtJs4 Learning (1): Get to know ExtJs4 and get to know extjs4 Understanding ExtJs 1. Can I use ExtJs for Javat? It is a display layer technology related to JS, HTML, and CSS. It has nothing to do with whether the server is. Net or PHP. 2. What types of projects is ExtJs suitable? According to the official saying, ExtJs is designed for you as a B/S desktop application and is not suitable for portal website

Do not know the socket and TCP connection process, do not know the sockettcp connection Directory:1. Background2. Detailed connection Process Analysis2.1 socket () function2.2 bind () function2.3 listen () and connect () Functions2.3.1 in-depth analysis of listen ()2.3.2 influence of syn flood2.4 accept () function2.5 send () and recv () Functions2.6 close () and shutdown () Functions3. Address/port Reuse T

I receive this email from time to time. Most of the people who write these messages are people who are not technically close, or are studying their first product. At first, I was always very angry when I heard people say that. Who are they arguing with about the time it takes to develop software? But then I realized that even if I had my own projections of how much development time to spend on my project, I was helpless. If I can't do it myself, why should I be angry with those people? What rea

. Its tiny components may occasionally flash on a computer screen. Because of this, our basic sense of intuition is ineffective when it comes to developing a Web application (or any type of software). the 1th, the speed, is obviously impossible for the layman to evaluate the software. Naturally, they tend to use volumetric indicators for evaluation. Either according to the number of pages describing the document, or according to the software's functional use cases or the number of features. Some

Increasingly feel that there is no teaching and educating atmosphere, in order to understand the closure of JS, I resorted to my English four level of sucking the strength to Google to search for the closure of the package explanation, when I saw the StackOverflow on this one, my brain appeared in a sentence: it is the goods did not run! See you in the next translation. Peter Mortensen asked: As old Albert says, "If you can't explain it to a six-year-old, you don't

functions. Create a pop-up DIV in jquery How to Create a jquery confirmation dialog box change Jqmodal Jqmodal is a jquery plug-in used to display notifications, dialogs, and model windows in a browser. It is as flexible and small as Swiss Army knife, and it lays the foundation for the General Purpose Window framework .. Zebra_dialog Zebra_dialog is a jquery plug-in that can be flexibly configured in the dialog box. It is only 4 kb in size and must be supported by jquery

Java programmers must know eight major sorting orders, and java programmers must know 1. Insert directly to sort(1) Basic Ideas:In the number of groups to be sorted, assume that the number of the preceding (n-1) [n> = 2] is alreadyNow we need to insert the nth number into the previous ordered number so that the n numberIt is also sorted. This repeats until all the rows are sorted.(2) Instances3) implemented

-angle, but has failed! get long time, just solve the problem. The process of solving is actually very wonderful, when I see the mybatis XML inside the think, why did you get long time to solve the problem? or oneself JS This together of knowledge is deficient ah. Below, put out the code, give everyone a tan: $ (function () {$ ("form:input.required"). each (function () {var $required = $ (" As above code: punctuation half angle to full angle, need to

controls within a page's control hierarchy can be painful but if you know how the controls are nested you can use the lesser known "$" cannot cut to find controls without having to write recursive code. if you're looking for a great way to recursively find a control (in cases where you don't know the exact control nesting) Check out my good buddy Michael Palermo's blog entry. the following example shows ho

I first got to know Java, and I first got to know me. The day of the first week's formal access to Java is coming to an end. It was a new teacher who had not adapted to his teaching method. After the lecture, let's do it ourselves, however, I forgot to understand it. After a few days, I gradually adapted to the situation and improved the efficiency of lectures. I also felt that Java and C language are sim

Programmers must know the 8 largest sorting, and programmers must know the sorting. Relationship between the eight sorting types: 1. Insert the sorting directly. (1) Basic Idea: In the number of groups to be sorted, assume that the number (n-1) [n> = 2] is already Now we need to insert the nth number into the previous ordered number so that the n number It is also sorted. This repeats until all the rows ar

Very strange, know where the bug is, but do not know why this bug occurred? PHP Code Year=isset ($_get["year"])? $_get[[year]:d ate ("Y"); $this->month=isset ($_get["month")? $_get["Month"]:d ate ("n"); $this->daynum=date ("T", Mktime (0,0,0, $this->month,1, $this->year)); $this->start_day=date ("W", Mktime (0,0,0, $this->month,1, $this->year));

);If year is a leap year, the method returns True, otherwise false is returned.Series Articles:Java know how much (top)Java know how much (interface) interfaceJava knows how much (40) the difference between an interface and an abstract classJava know how much (41) generic explanationJava know how much (42) the range of

Ava know how much (1) Language overviewJava know how much (2) virtual machine (JVM) and cross-platform principleJava know how much (3) employment directionJava know how much (4) the difference between J2SE, Java EE, J2MEJava know how much (5) Build Java development environme