Beef Brisket Press Release system--phase summary (i)

Beef Brisket video saw a set of, through this part of the study, let oneself to develop a system process has a certain understanding. Although the development documents have been written several times before, the real practice has given me a deeper impression.

My Summary of the previous lecture is as follows:

       Video Opening first of all, we mainly introduce the necessary software for the development of this system, mainlyVS, databases, drawing tools, browsers, and so on, in the introduction of the Firefox browser, it introduces aFirebugplugin, Online introduction: It setsHTMLView and edit,Javascriptconsole, network condition Monitor in one, is the developmentJavaScript,CSS,HTMLand theAjax's right-hand man. But really how to use it is unclear, wait until after the contact to learn.

Next introduced is the design document, he did not introduce the requirements analysis phase of the content, directly from the detailed design began, respectively, the database and interface design detailed introduction. Database design, build tables and operations between tables; the design of the database must take into account our needs and the three paradigms, otherwise it will cause a lot of trouble behind our work. I was in the computer room when the personal refactoring did not design a database, so in the implementation of the late to make some changes to the database, code adjustment and other problems. The beef brisket teacher gave us a few comments when introducing the establishment of the database: first, it is best to use code to build the database, which will help to increase our code affinity, and secondly, we must make a good backup of the statement statements we use, and note the comments on the code.

then is the implementation phase of the code, which is relatively simple compared to the present, it is easy to understand, is a simple three layer between the call process. But what we need to understand is his implementation process, from the ability to implement code functions, to the merging and streamlining of code is what we need to be understood and mastered. Here he is mainly talking about the construction of the SqlHelper class, at the beginning of the function of a few times, can be done by a separate operation of the database, and then add functionality, which caused the D -layer code repeated, then the sqlhelper class naturally leads to it. The reconstruction of the time only know this truth, and do not have a deep understanding, through this introduction, The understanding of sqlhelper more profound, basically can do alone to establish.

       Section9The lecture also introducedSQLinjected, previously in writingSQLThe statement is struck by someone else's code, so it has been used in its own way, such asSelect newsId from newswhere [email protected],yourself to@caIdunderstanding is a defined formal parameter, but after listening to the introduction of the beef brisket teacher, it is not only known that it is not only a parameter of parameters, but also to preventSQLa notation for injection.

The last is to introduce the writing of comments, table header comments, block comments, such as the wording. The beef brisket teacher gave us a lot of quick ways to write notes, greatly improving our programming efficiency.

This part of the knowledge we have learned before, but more meticulous, from the original macro learning and control to the present details of learning and understanding. Therefore, more confirmed that the teacher has been advocating the sentence, the first time learning does not understand, there is no need to die in that, probably understand, always understand. Through such a repetition of the review process, it is really "always understand." This also for the following room cooperation has laid a great foundation ah. The next part of the video is the introduction of CSS , is looking forward to the dazzling Web page ...

Beef Brisket Press Release system--phase summary (i)