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One, Po:persistant object persistent objects, can be seen as a Java object mapped to a table in the database. The simplest PO is a record in a table in the corresponding database, and multiple records can be used with a collection of PO. The PO should not contain any operations on the database.Two, Vo:value object value objects. Typically used for data transfer between business tiers, as is the case with PO, which contains only data. But it should be abstracted out of the business object that ca

Early 2012 Micro Bo on the most fire topic, is undoubtedly "China's most cattle e-commerce site"--12306.cn and one night the red Baidu hr Liu Dong Jocelin, Liu Dong Jocelin Sina Weibo fans in two days increased to 10 tens of thousands of, some say is hype, some say is accidental, concrete truth, We do not too much to discuss, I will say yesterday to use Baidu HR Liu Dong incident to my personal small station to import traffic some effect. The traditi

PO BO VO DTO POJO DAO Concept and its role (with conversion chart)Blog Category: Java JavadaovopojoboThe large number of professional abbreviations in the development of the Java EE is confusing, especially for new graduates who are not clear-minded.If with the company Daniel talk about technical people export is PO VO BO DTO POJO DAO, etc., so that the new people are extremely admired Daniel.

//----------------------------------------------------------------// Copyright (c) 2012 Shanghai Internet software Co., Ltd.// All Rights Reserved.// All Rights Reserved.//// File name: Bo // File function description:////// Create an ID: //// Modify the ID:// Modify the description://----------------------------------------------------------------Using system;Using system. Collections. Generic;Using system. text;Using beyondbit. Framework. Biz;Using

One, in the Java EE, often mention several objects (object), understanding their meaning can help us to better understand the object-oriented design thinking. ORM is an abbreviation for Object Relational Mapping "Objects 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/rmapping,There are a series of important objects, common with Vo,po,dto,pojo,dao,

Sqrt BoTime limit:2000/1000 MS (java/others) Memory limit:131072/131072 K (java/others)Total submission (s): 1173 Accepted Submission (s): 528problem DescriptionLet ' s define the functionf(n)=⌊n−−√⌋ .Bo wanted to know the minimum numberywhich satisfiesfy(n)=1 .NoteF1(N)=F(N),fy(n)=F(fy−1(n)) It is a pity, so Bo can only use 1 unit of time to calculate this function each time.And

Sqrt BoTime limit:2000/1000 MS (java/others) Memory limit:131072/131072 K (java/others)Total submission (s): 980 Accepted Submission (s): 452Problem Descriptionlet ' s define the functionf(n)=⌊n√⌋ .Bo wanted to know the minimum numberywhich satisfiesfy(n)=1 .NoteF1(N)=F(N),fy(n)=F(fy−1(n)) It is a pity, so Bo can only use 1 unit of time to calculate this function each time.And

Java VO \ PO \ DAO \ BO details, vobo VO value object \ PO Persistent object, which consists of a set of properties and the get \ set Method of the properties. Full-process persistence object of PO The most vivid understanding is that a PO is a record in the database and can be seen as a java object that is mapped to a table in the database. The advantage is that a record can be processed as an object, which can be easily converted to other objects.

Sina technology news on the evening of June February 1, in response to Microsoft's bid of 44.6 billion US dollars for Yahoo's purchase, Hong Bo, a famous blog and five-quarter consulting partner, said in accepting the Sina technology line, microsoft intends to expand its Internet business through the acquisition method. After the gates age, Microsoft will be an important player in the Internet field. 　　Special Internet players "Obviously, this is a s

between the presentation layer and the service layer.5.VO (Value object) value objects?? Typically used for data transfer between business tiers, as is the case with PO, which contains only data. But it should be abstracted out of business objects that can correspond to tables, or not, depending on the needs of the business. Created with the new keyword, collected by GC.6.BO (business object) service object?? From the business model perspective, see

Now the domestic famous micro-Bo has Sina Weibo, Tencent Weibo, Sohu Weibo, NetEase Weibo, then is not able to use these micro-blog for their own site to increase the chain, the answer is yes, this microblogging do not need to be like the blog to keep, do not have to publish articles, the use of micro-Bo main station high weight, for their own site to bring an outside chain, We can test, the concrete effect

Java object (PO, BO, VO, DTO, POJO, DAO, Entity, JavaBean, JavaBeans) differentiation, pojojavabeans PO: persistent object), Po (persistent object) is the Entity in the Object/Relation Mapping Framework. Each attribute of po basically corresponds to a field in the database table. It is a pure Java object that complies with the Java Bean specifications without adding other attributes and methods. Persistent objects are created by the insert database an

Recently in the write interface to Android, where server data needs to define VO (Value object) object for encapsulation transportFor Vo, PO, BO, Qo,dao,pojo concept is still relatively vague, so here to record:The 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

Vo is a mapping to a table in a database, and a table corresponds to a VODAO is to use VO to access the real table, the operation of the database is done in DAOBo is the business layer that does the logical processingVO, PO, BO, QO, DAO, POJOThe 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 O/RIn

PO (named bean,entity, etc.) : persistant Object Persistent objects, the display state of records in a database table in a Java object The 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 (named service,manager,business): Business Object Business Objects The main role is to encapsulate the business logic as an object. T

Business Chamber of Commerce operation is Bo once rich three generations of industry? 650) this.width=650; "style=" height:80px; "id=" Paperpicarea "class=" Lp_pic_type_3 "src=" Http://user.qzone.qq.com/ac /b.gif "alt=" B.gif "/>in the industry people feel not to join the people too silly, such a simple thing these people can not understand, we know just met this industry when there will be a lecturer told us 3800 can earn 3.8 million, 69800 can earn