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Today really disappointing to 400: Operating Systems
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Today really disappointing to 400
Today, I am the first to give staff training> Not aware of the slow CA ODBC is not the efficiency of the communication protocol or things (we TCPIP), and anyway I do not believe that the processing speed of 400 is not, is it not the performance of CA ah? ? ?
Today, I am the first to give staff training> Not aware of the slow CA ODBC is not the efficiency of the communication protocol or things (we TCPIP), and anyway I do not believe that the processing speed of 400 is not, is it not the performance of CA ah? ? ?
Iyesorange back in :2003-09-12 22:27:22 | May | Xuguopeng back in :2003-09-13 13:01:35 | Even if the development is too slow point if it is operating dozens of tables at the same time that it went to immortality | Rick_zhang back in :2003-09-13 12:58:50 | Of course, you do slow, and not other, at least he ODBC more than the average to a code of action. ODBC my personal views such a thing for developers to use> Rick_zhang back in :2003-09-13 15:18:40 | You said that the ODBC or ADO category of client development, 400 itself is not suitable for use as a .270 machine interaction domain of the poor, not suitable for interactive development. His main performance is reflected in the batch, if In this machine you really want to do client development, I suggest you use jtopen. host server with the functions of development. technical requirements to do so, however high or by using web facing do. word, iSeries use of performance do you decide certainly not high. really want to do high-performance development, I think> Xuguopeng back in :2003-09-13 21:51:28 | MVC is what? ? Gulouguawen younger brother, prawns guidance | Rick_zhang back in :2003-09-14 00:27:04 | Model - View - Controller (MVC) is Xerox PARC in the 1980s took the programming language Smalltalk-80 invention of a software design pattern has been widely used. In recent years was recommended as the Sun's J2EE platform design, and more and more by the use of ColdFusion and PHP developers are welcome. Model - View - controller model is a useful tool kit, it has a lot of advantages, but there are also some shortcomings. | MVC how to work MVC is a design pattern, it mandatory that the application's input, processing and output separately. Application procedures for the use of MVC was divided into three core components: Model, View, Controller. They deal with their respective mandates. View View user to see and interact with the interface. > How to deal with the application's interface is becoming increasingly challenging. MVC a big advantage is that it can process your application for a lot of different views. In fact, in the view there is no real handle, whether they are> Model That enterprise data model and business rules. MVC in three parts, the model has the largest number of processing tasks. For example, it may be used as EJBs and ColdFusion Components such a component object to deal with the database. The return of the model data to be neutral, that is not related to model and data formats, such a model can provide data for multiple views. As used in the model> Controller Controller accept user input and call to complete the model and the view of the needs of users. Therefore, when a Web page click the hyperlink and send HTML form, the controller itself does not output anything and do anything to deal with. It was> Now we summarize the MVC process, the first controller receiving the request of users, and decided which model should be called for, and then with business logic model to deal with the request and returned to the user data, the final controller with the corresponding return of view formatted model data, and through that layer to be added. Why use MVC Most Web applications are used as ASP, PHP, or CFML language of this process to create the. They will be like the database query the data layers such as HTML code and the code of that mix. More experienced data from the developers will be separated from that of, but usually it is not very easy to do, it requires careful planning and continuous attempt. MVC fundamentally mandatory them separately. Although the structure MVC application needs some extra work, but it gives us the advantage of no doubt. First, and most important point is that multiple views to share a model, as I mentioned, is the need for more and more ways to access your applications. In this regard,> Because you have data and business rules separate from that layer, so you can maximize the reuse your code. Since the return of the data model does not formatted, the same component can be different interfaces used. For example, a lot of data that may be used to HTML, but they may also use Macromedia Flash and WAP to express. Model also has a lasting state of management and data processing functions, such as session-based shopping cart and e-commerce process can be Flash site or wireless networking applications by reusing. Because the model is self-contained, and the controller and the view of the separation, so you can easily change the application of business rules and data layers. If you want your database from MySQL ported to Oracle, or to change your RDBMS-based data sources to LDAP, you>> The use of the MVC application of the three components are mutually antagonistic, a change which will not affect the other two, based> For me, the controller also provides a benefit that can be used to connect different controller model and the view to accomplish the needs of users, this controller can be constructed to provide a powerful application means. Given some reusable model and the view, the controller can choose according to the user's demand model, and then choose to view the results to the user. MVC shortcomings MVC shortcomings because it has no clear definition, it's entirely understandable MVC is not very easy. Use MVC need careful planning, because of its internal principles rather complicated, so it is necessary to take some time to think. You will have to spend considerable time to consider how to use MVC to your application, because the model and view to the strict separation, and thus we come to debug applications certain difficulties. Before each component in the use of the need to thoroughly test. > According to my personal experience, because we will be an application into three components, so the use of MVC at the same time means that you will be more than ever before to manage the paper, it is obvious. This seems to us an increase in the workload, but please remember this than it can give us the advantage of not worth mentioning. MVC is not suitable for small or medium-scale applications, spent a lot of time MVC will be applied to large-scale application is not normally would be wasted. MVC is a good way to create software MVC design pattern is a good way to create software, some of the principles it promotes, as the content and display of mutual separation may be better understood. But if you want to isolate model, view and controller components, you may need to rethink your application, in particular the framework of application areas. If you are willing to accept the MVC, and its ability to cope with the extra work and complexity of the MVC will help you in the robustness of the software, code reuse and structure to a new level. This is the Original Source: http://www.phpe.net/articles/343.shtml This is> How to understand and use depends on your own understanding.
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