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DO:Domain Object Persistent Objectis a tangible or intangible business entity that is abstracted from the real world. PO:Persistant Object Persistent ObjectsThe most vivid understanding is that a PO is a record in the database.The advantage is that a record can be processed as an object and can be easily converted to other objects. BO:Business ObjectThe main role is to encapsulate the business logic as an object. This object can include one or more other objects.such as a resume, education ex

Problem Description "Swipe Bo" is a puzzle game that requires foresight and skill.The main character of this game is a square blue tofu called Bo. We can swipe up/down/left/right to move Bo up/down/left/right. Bo always moves in a straight line and nothing can stop it except a wall. You need-help

Hdu Swipe Bo (bfs + state compression) Error multiple timesSwipe BoTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission (s): 1549 Accepted Submission (s): 315Problem Description "Swipe Bo" is a puzzle game that requires foresight and skill.The main character of this game is a square blue tofu called Bo. we can swipe up/

Explore the new era of software industry development path, focus on the direction of digital economy development, pulse "deep integration" prospects, analysis of the future development of artificial intelligence, June 29 to July 2, 2018 soft Bo will be held in Beijing, a number of ministerial-level, provincial and municipal leaders, two "two chambers" academician in the General Assembly to speak, The seven exhibition areas focus on the latest achievem

. 5, micro-bo relative timeNow, the Jquery.weibo.search.js plug-in is basically implemented, but we find that each micro-blog display time seems to be not very normal, and has not implemented scrolling (animate) and Fade (fadeIn) effect. Because microblogging is using relative time to express the time of the microblogging plug-in, of course, we can also show the time, next, let us change the time of the microblogging creation (CREATED_AT) in the for

For the users of the grapefruit software to explain the detailed interpretation of the release of the micro-bo binding tutorial. Tutorial Sharing: If you're using a Twitter-bound word, you can log on to Sina Weibo on the Web page, then click on the settings inside the top right corner, click on the password to the right of the login name, and then see that there is a view of the current authorization, click to view the current authorizat

The Java (Po,vo,to,bo,dao,POJO) explanation for the O/R Mapping is an abbreviation for Object Relational Mapping ( the Objects relational map). The popular point is that the object is bound to the relational database, and the object is used to represent the relational data. 　　In the world of O/R Mapping, there are two basic and important things to understand, namely Vo,po. VO, a Value object, a PO, a persistent object (Persisent objects) that cons

Java's (Po,vo,to,bo,dao,pojo) explanationThe O/R Mapping is an abbreviation for the Object Relational Mapping. The popular point is that the object is bound to the relational database, and the object is used to represent the relational data. In the world of O/R mapping, there are two basic and important things to understand, namely Vo,po.VO, a Value object, a PO, a persistent object (Persisent objects) that consists of a set of properties and properti

Internet "Zhou Bo Tong" is a domestic author of the development of free RSS reading tool, its initial positioning is as a blog companion, blog Local maintenance functions added in and in the blogger to promote. However, because of the user-friendly interface, clear classification, and built-in hundreds of RSS feeds, so that users no longer need to one by one open a variety of web pages can be the first time to read their favorite news, and even can ad

Web|web2 from a person, 200,000 yuan, a year quickly to Douban do more than 400,000 registered users, is recognized as the pioneer of the Chinese web2.0 era. Next to Beijing's 798 Art district, there is a red business building. The front is noisy downtown, behind is a quite small crowd of art community, Yang Bo and his team here cultivate their "watercress" is growing. The bean seedlings in the Grimm's Fairy tales, Jack and the Beanstalk, climbed in

course I mean their attributes ). As a result, the PO is independent, and the data persistence layer is independent, so it is not subject to any business interference. In this case, the business logic layer is also independent and will not be affected by the data persistence layer. The business layer only cares about the processing of the business logic. As for how to read and give it to others! However, if we do not use the data persistence layer or hibernate, Po and VO can be the same thing,

Custom view has always been its own short board, taking advantage of the company's project when not nervous, more to strengthen this practice. This series of articles mainly records their experience in the learning process of customizing view. When you brush Weibo, you find that the Micro-blog movement interface, the display of the motion integral has a very good-looking animation effect. OK, just start with my custom view path! Take a look at the final effect: Fractional color, fractional

Weibo navigation looks beautiful, doesn't bother you, and writes code directly. The above code is to use JS to achieve the micro-Bo navigation bar, the need for friends to refer to.

Go to the application square of Sina Weibo and search for "Delete management tool". Click the "Use Now" button, and then for the application authorization, you will open the following image of the micro-BO bulk Delete interface. Select the multiple selection boxes in the upper-right corner of the microblog you want to remove, and then click the Delete button. In addition, you can also use this interface before the lower left corner and a key backu

Bo-Yang station is now more popular optimization methods, has been countless owners to verify the practicality and effectiveness of this method. Let's take a look at some of the forms of blog-keeping station today. First, the type of This is the most common way to raise the first blog, is to raise a group of blogs, often updated, and then slowly the weight of the blog to upgrade up, and then link to the form of the weight of the blog into the site,

more focused on writing data access code.The DAO pattern is one of the standard Java EE design patterns. Developers use this pattern to separate the underlying data access operations from the high-level business logic. A typical DAO implementation has the following several components:1. A DAO factory class;2. a DAO interface;3. A concrete class that implements the DAO interface;4. Data transfer objects (sometimes called value objects).The specific DAO class contains the logic to access data fro

the alias table and the base table, and finally build the context. 2. What are the concepts, implementation methods, and advantages and disadvantages of derived tables and alias tables? The derived table is similar to the database view, and the alias table is renamed in the universe of the database physical table; The derived table can flexibly process complicated data logic, but it is inefficient; The alias table is set based on business needs and is generally used to solve the loop problem i

First of all, make love hanging machine This website is because of the chaos of the domestic hanging machine project, want to provide a good learning exchange platform for everyone, and the second is because the hanging brother has been in Bo Rui to get higher hanging machine income. So want to share it to everyone, for me also bring a good income for everyone. (*^__^*) hehe ...Website Description:Bo-RUI Network monitoring software is what we often ca

relationship to a PO.Create a BO object to process the resume. Each BO contains the PO.In this way, we can process the business logic for BO.VO:Value objectViewObject presentation layer objectIt mainly corresponds to the Data Objects displayed on the interface. For a WEB page, or a SWT or SWING interface, use a VO object to correspond to the value of the entire interface.DTO:Data Transfer ObjectIt is mainl

just a few days before the company, was arranged to read the document, mainly on the current project of the technology selection and framework of basic understanding. Used by the company is now a common frameworkSpring,Strutsand theMyBatis. It's pretty simple to understand, but it's a bunch ofVO,BOand thePOto make not clear, and now also developed a few lines, with some preliminary understanding, the first summary. po:persistantobject Persistent objects. The concept that occurs at the O/R mapp