Semantic Web-Marketing 3.0: Advertisement Transformation by Modeling

DOI : 10.17577/IJERTV2IS80855

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Semantic Web-Marketing 3.0: Advertisement Transformation by Modeling

Semantic Web-Marketing 3.0: Advertisement Transformation By Modeling.

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Lamlili El Mazoui Nadori Yasser , Mohammed Erramdani , Mimoun Moussaoui




MATSI Laboratory, Mohammed First University, EST Oujda, Morocco

Department of Management, Mohammed First University, EST Oujda, Morocco


In this paper we have focused on the evolution of the Web- marketing meaning the passage of the Web-marketing 2.0 to 3.0, baptized " Semantic Web-marketing ", the main idea being to make easier to the Internet user to use a huge and disrupting stream of information and make it organized and easily accessible.

As so, we have chosen to use the N-tiers applications and the MDA (Model Driving Architecture) transformation. In this paper we are going to present a model-driven approach to the development of N-tiers web applications based on the UML class diagram. The transformation language is the MOF 2.0 QVT (Meta-Object Facility 2.0 Query-View-Transformation) standard which defines the meta-model for the development of model transformation. The transformation rules defined in this paper can generate, from the class diagram, an XML file containing the layers of N-tiers web application respecting a MVC2 (Model-View-Controller), DI (Dependency Injection) and DAO (Data Access Object) patterns. This file can be used to generate the end-to-end necessary code of a web application.

  1. In the years following the arrival of internet, many organizations begun to consider MDA (Model-Driven Architecture) as an approach to design and implement enterprise applications. As result, many new trends have appeared under the frameworks, changing the development of classical web applications.

    These changes are present in MDA, and help transform a CIM (Computation Independent Model) into a PIM (Platform Independent Model) or to obtain a PSM (Platform Specific Model) from a PIM.

    N-tiers (multi-tier) architecture provides a model for developers to create a flexible and reusable application. By breaking up an application into tiers, developers have to modify or add a specific layer only, rather than rewriting the entire application all over again. There should be a presentation tier, a business or data access tier, and a data tier.

    In this work we are going to transform an UML Model concerning an advertisement in a social network to generate a source code.

    In a recent work [21], the authors have developed a source and a target meta-models. The first was a PIM meta-model specific to class diagrams. The second was a PSM meta-

    model for MVC2 (Model-View-Controller) web applications (particularly Struts), then they have elaborated a transformation rules using the approach by programming. The purpose of our contribution is to produce and generate an N-tiers PSM model, implementing MVC2, DI (Dependency Injection) and DAO (Data Access Object) patterns, from the class diagram. In this case, we elaborate a number of transformation rules using the approach by modeling and MOF 2.0 QVT, as transformation language, to permit the generation of an XML file that can be used to produce the required code of the target application. The advantage of this approach is the bidirectional execution of transformation rules.

    This paper is organized as follows: We begin in the first section with an introduction. Related works are presented in the second section. The third section permits to develop MDA as architecture. The fourth section presents the N- tiers architecture, the MVC2, DI and DAO patterns and its implementation as frameworks. The approach by modeling and the transformation language MOF 2.0 QVT are the subject of the fifth section. In the sixth section, we have elaborated the UML and N-tiers meta-models. The transformation rules of UML source model to the N-tiers target model, the transformation algorithm and the results of this transformation are presented in the seventh section. The final section concludes this paper and presents some perspectives.

  2. Many researches on MDA and generation of code have been conducted in recent years. The most relevant are [7][8][4][10][11][13][16][17][18][20][21][22][26][27] [34].

    The authors of the work [18], show how to generate JSPs and JavaBeans using the UWE [17], and the ATL transformation language [16]. Among future works cited, the authors considered the integration of AJAX into the engineering process of UWE.

    Bezivin et al. [8] propose to use ATL transformation to transform PIMs defined by Enterprise Distributed Object Computing into PSMs for different web services platforms.

    Billing et al. [7] define PIM to PSM transformation in the context of EJB by using QVT.

    The authors of the work [27] show that the MDA can be considered as a software industrialization pattern (or a software factory). They propose an MDA Engine based on a real case study in an IT services company. It is a proposal for a framework to create custom MDA tools, based on XMI, XSLT and the Visitor Pattern.

    The work [10] has proposed a model-driven development approach for E-Learning platform. The authors established the domain model (CIM) through the analysis of business logic, and then they established robustness diagram of the system after the robustness analysis. Then, they stratified on the PIM under the J2EE framework, and proposed the method of transformation from PIM to PSM layer by layer. The objective of the work [34] is to introduce a new framework for the design of secure Data Warehouses based on MDA and QVT, which covers all the design phases (conceptual, logical and physical) and specifies security measures in all of them.

    One approach which has gained much attention in the web-based MDA community is the AndroMDA MDA generator [4]. This framework provides a PIM schemes to model and integrate a wide variety of scenarios and comes with a set of plugins, called cartridges.

    Two other works follow the same logic and have been the subject of two articles [11] [13]. A metamodel of AJAX has been defined using the AndroMDA tool. The generation of AJAX code was made and illustrated by an application that manages CRUD operations of person. The meta-model is very important and we can join it to our meta-models for modeling AJAX user interfaces.

    The objective of the work of Nasir et al. [26] is to generate the code of a DotNet application Student Appointment Management System. The method used is WebML. The code is generated, applying the MDA approach.

    Recently, the work [22] was conducted to model Web MVC2 generation using the ATL transformation language. This paper aims to rethink and to complete the work presented in the articles [20][21], by applying the standard MOF 2.0 QVT to develop the transformation rules aiming at generating the N-tiers web according to our target model. Actually, it is the only work for reaching this goal.

  3. In November 2000, OMG, a consortium of over 1 000 companies, initiated the MDA approach. The key principle of MDA is the use of models at different phases of application development. Specifically, MDA advocates the development of requirements models (CIM), analysis and design (PIM) and (PSM) code [6].

    The MDA architecture is divided into four layers. In the first layer, we find the standard UML (Unified Modeling Language), MOF (Meta-Object Facility) and CWM

    (Common Warehouse Meta-model). In the second layer, we find a standard XMI (XML Metadata Interchange), which enables the dialogue between middlewares (Java, CRBA, .NET and web services). The third layer contains the services that manage events, security, directories and transactions. The last layer provides frameworks which are adaptable to different types of applications namely Finance, Telecommunications, Transport, medicine, E- commerce and Manufacture, etc.).

    The major objective of MDA is to develop sustainable models, those models are independent from the technical details of platforms implementation (J2EE, DotNet, PHP or other), in order to enable the automatic generation of all codes and applications leading to a significant gain in productivity. MDA includes the definition of several standards, including UML [39], MOF [23] and XMI [40].

  4. N-tiers application architecture provides a model for developers to create a flexible and reusable application and provides some advantages that are vital to the business continuity of the enterprise. Typical features of a real life N-tiers may include the Security, Availability, Scalability, Manageability, Easy Maintenance and Data Abstraction. To most people, an N-tiers application is anything that is divided into discrete logical parts. The most common choice is a three-part breakdown presentation, business logic, and data access although other possibilities exist.

    In this paper, we are using the following layers:

    Fig.1 N-tiers Layers

    Each Layer can be developed independently of the other provided that it adheres to the standards and communicates with the other layers.

      1. The presentation Layer with MVC2 pattern

        The presentation layer of most applications is often critical to the application's success. After all, the presentation layer represents the interface between the user and the application back-end.

        Along time ago, web applications were very simple and the technology that was used to develop them was Common Gateway Interface (CGI). As applications became more complex, the defects and limits of this technology have emerged. Slowness and considerable

        consumption of memory. Therefore, the J2EE platform applies the architecture MVC2 [3]. In this paradigm, the model represents the information system consisting of javaBeans. The view represents the HTML pages returned to the user, and consists of JavaServerPage (JSP). The Controller is the glue between the two and it is composed of servlets. In short, during the early 80s with smalltalk, MVC was widespread in the field of object development. Many frameworks that implements MVC2 pattern have emerged, among them: Struts [1], PureMVC [29], Gwittir [14], SpringMVC [35], Zend [38], ASP.NET MVC2 [5].

        Struts remains the most mature solution that has earned the trust of most developers, that is why we have taken it into account in our source meta-model.

      2. The Business layer with Data Transfer Object and Dependency Injection patterns

        Business logic layer is the Layer of abstraction between the presentation layer and persistence layer to avoid a strong coupling between these two layers and hide the complexity of the implementation of business processing to presentation layer. All business treatments will be implemented by this layer. The implementation of this layer is produced by the DTO pattern to render the result of running the service and the DI pattern to ensure a decoupling between objects.

        In an article written in early 2004, Martin Fowler asked what aspect of control is being inverted. He concluded that it is the acquisition of dependent objects that is being inverted. Based on that revelation, he coined a better name for inversion of control: dependency injection [19].

        In other words, Dependency Injection is a worthwhile concept used within applications that we develop. Not only can it reduce coupling between components, but it also saves us from writing boilerplate factory creation code over and over again. Many frameworks that implements DI pattern have emerged, among them: Spring [35], Symfony dependency injection [37], Spring.NET [36], EJB [30], PicoContainer [31]. (We have used some Spring classes in our source meta-model).

        Recently, with the development of mapping o/r tools, it becomes easier to transfer a model object on the client layer (UI), and the distribution of the service layer, other advantage of the DTOs, is privileged in N-tiers modern architectures, that is why we have taken it into account in our work.

      3. The persistence Layer with DAO pattern

    This layer is the entry point to the database. All operations required to create, retrieve, update, and delete data in the database are implemented in the components of this layer. The Data Access Object (DAO) pattern is now a widely accepted mechanism to abstract the details of persistence in an application. In practice, it is not always easy to make our DAO's fully hidden in the underlying persistence layer. The advantage of this abstraction is that we can change the persistence mechanism without affecting the logic domain. All we need to change is the DAO layer which, if designed properly, is a lot easier to do than changing the

    entire logic domain. In fact we might be able to cleanly swap in a new data access layer for our new database or alternate persistence mechanism. Many frameworks that implements DAO pattern have emerged, among them: SpringDao [35], JPA [32], Hibernate [15], iBatis [2], NHibernate [28], EJB [30]. We have used Hibernate in our work because it is the most used solution within the java community.

  5. MDA establishes the links of traceability between the CIM, PIM and PSM models due to the execution of the models transformations.

    The models transformations recommended by MDA are essentially the CIM transformations to PIM and PIM transformations to PSM. In our work, we perform the second transformation PIM to PSM devoted to N-tires web applications.

    1. Approach by modeling

      Currently the transformations of models can be written according to three approaches: Approach by Programming, approach by Template and approach by Modeling.

      The approach by Modeling is the one used in the present paper. It consists of applying concepts from model engineering to models transformations themselves. The objective is modeling a transformation, to reach perennial and productive transformation models, and to express their independence towards the platforms of execution.

      Consequently, OMG elaborated a standard transformation language called MOF 2. 0 QVT [24]. The advantage of the approach by modeling is the bidirectional execution of transformation rules. This aspect is useful for the synchronization, the consistency and the models reverse engineering [9].

      Figure 2 illustrates the approach by modeling. Models transformation is defined as a model structured according to MOF2.0 QVT meta-model. The MOF 2 0 QVT meta- model express some structural correspondence rules between the source and target meta-model of a transformation. This model is a perennial and productive model that is necessary to transform in order to execute the transformation on an execution platform.

    2. MOF 2.0 QVT

      Transformations models are at the heart of MDA, a standard known as MOF 2.0 QVT being established to model these changes. This standard defines the meta- model for the development of transformation model. The QVT standard has a hybrid character (declarative / imperative) in the sense that it is composed of three different transformation languages.

      The imperative style languages are better suited for complex transformations including a significant algorithm component. Compared to the declarative style, they have the advantage of optional case management in a transformation. For this reason, we chose to use an imperative style language in this paper.

      The imperative QVT component is supported by Operational Mappings language. The vision requires an explicit imperative navigation as well as an explicit creation of target model elements. The Operational Mappings language extends the two dclarative languages of QVT, adding imperative constructs (sequence, selection, repetition, etc.) and constructs in OCL edge effect.

      This work uses the QVT-Operational mappings language implemented by SmartQVT [33]. SmartQVT is the first open source implementation of the QVT-Operational language. The tool comes as an Eclipse plugin under EPL license running on top of EMF framework. This tool is developed by France Telecom R & D project and partially funded by the European IST Model Ware.

      SmartQVT is composed of 3 components:

      • QVT Editor: helps end users to write QVT specifications.

      • QVT Parser: converts the QVT concrete textual syntax into its corresponding representation in terms of the QVT meta-model.

      • QVT Compiler: produces, from a QVT model, a Java program on top of EMF generated APIs for executing the transformation. The format of the input is a QVT specification provided in XMI 2.0 in conformance with the QVT meta-model.

  6. To develop the transformation algorithm between source and target model, we present in this section, the various meta-classes forming the meta-model UML source and the meta-model N-tiers target.

    1. Meta-model UML source

      The source meta-model structures a simplified UML model based on packages containing data types and classes. Those classes contain typed properties and they are characterized by multiplicities (upper and lower). The classes are composed of operations with typed parameters. Figure 3 illustrates the source meta-model.

      • UmlPackage: is the concept of UML package. This meta-class is connected to the meta-class Classifier.

      • Classifier: This is an abstract meta-class representing both the concept of UML class and the concept of data type.

      • Class: is the concept of UML class.

      • DataType: represents UML data type.

      • Operation: is used to express the concept of operations of a UML class.

      • Parameter: expresses the concept of parameters of an operation. These are of two types, Class or DataType. It

        explains the link between Parameter meta-class and Classifier meta-class.

      • Property: expresses the concept of properties of a UML class. These properties are represented by the multiplicity and meta-attributes upper and lower.

    2. Meta-model N-tiers target

      Our target meta-model is composed of three essential part. Figure 4 illustrates the first part of the target meta-model. This meta-model represents a simplified version of the DAO pattern. It presents the different meta-classes to express the concept of DAO contained in the DaoPackage:

      • CrudProjectPackage: represents the project package. This meta-class is connected to the meta-class DaoPackage, BusinessPackage and UIPackage.

      • DaoPackage: represents package which contains the different meta-classes to express the concept of DAO.

      • HibernateDaoSupport: expresses the concept of generic class for DAOs, defining template methods for DAO initialization.

      • Interface: is the concept of UML interface.

      • IDao: represents the concept of Dao interface containing the methods definition to create, retrieve, update, and delete data in the database.

      • DaoImpl: expresses the concept of Dao implementation, all methods to create, retrieve, update, and delete data in the database are implemented in this meta-class.

      • Pojo: represents the concept of pojo. The latter extends the meta-class Class. The pojos represents objects in the area of application. These objects communicate with the tables of relational database, which explains the meta- association with meta-class Table.

      • Table: is the concept of table in the relational databases. It contains a meta-attribute name which represents the table name in the database. The meta-class is connected by a meta-association to the meta-class Column. Figure 5 illustrates the second part of target meta-model. This meta-model is the business model of the application to be processed. In our case, we opted for components such as DTO and DI pattern. Here, we present the different meta-classes to express the concept of DI contained in the Business Package.

        This meta-model structures the models representing the business logic of the target application. This logic is essentially made up of DTO components.

      • BusinessPackage: represents the package which contains the different meta-classes to express the concept of the business logic of target application.

      • Interface: (already seen at the DaoPackage meta- model)

      • IService: represents the concept of service interface containing the methods definition.

      • ServiceImpl: expresses the concept of service implementation containing the methods representing in IDao meta-class and declared in IService meta-class.

      • IDao: ( already seen at the DaoPackage meta-model)

      • Dto: represents the concept of business object that needs to be transferred across a process or network boundary. These objects contain all/some attributes of the pojos, which explains the meta-association with meta-class Pojo.

      • Pojo: ( already seen at the DaoPackage meta-model)

        Figure 6 illustrates the third part of the target meta-model. This meta-model represents a concept of MVC2 implementation in the user interface.

      • UIPackage: represents the different meta-classes to express the concept of MVC2. This meta-class is connected to the meta-class ViewPackage and ControllePackage which represents respectively View and Controller package.

      • ActionMapping: Represents the concept of ActionMapping classes. An ActionMapping class contains information to deploy of a class Action. This explains the connection with the meta-class Action.

      • Action: is the concept of action. Class Action contains its own processing of the application; hence it should be linked to the various beans.

      • DelagatingActionProxy: represents the concept of Proxy for a Spring-managed Struts WebApplicationContext. The proxy is defined in the Struts-config file, specifying this class as the action class. This class will delegate to a Struts Action that is defined in Action bean in the ContextLoaderPlugIn context.

      • ActionForm: represents the concept of ActionForm classes. An ActionForm represents a form containing the parameters of the request from the view (ViewPackage). This object is used by Action Class (This is particularly one of the four parameters of the operation execute()), which explains the link with the metaclass Action.

      • JspPage: represents a Jsp page. An action class may be called from a hyperlink in a Jsp. This explains the link between the Jsp page and Action class. The link between ActionForward and Jsp page is trivial. ActionForm is linked to Jsp page because it contains the information that would be transmitted in the request and then filled in the actionForm. The link between Jsp page and HttpRequest expresses the fact that the Jsp page can use the information contained in an HttpRequest object.

      • HttpRequest: is the concept of HttpServletRequest


      • HttpResponse: represents the concept of HttpServlet- Response classes.

      • ApplicationContext: represents the concept of Central interface to provide configuration for an application, An ApplicationContext provides a Bean factory methods for accessing application components and Inheritance from a parent context. Definitions in a descendant context will always take priority. This means, for example, that a single parent context can be used by an entire web application, while each servlet has its own child context that is independent of other servlets.

      • ServiceLocator: expresses the concept of Service lookup and creation involves complex interfaces and network operations.

      This meta-model structures the models representing the view application. In this model, the Servlet invokes the execute( ) method on the instance of the action class. This method completes its processing and then calls the mapping.findforward( ) method with a return to a specified Jsp page.

      Annexe 1 shows the global view of our meta-model target.

  7. CRUD operations (Create, Remove, Update, and Display) are most commonly implemented in all systems. That is why we have taken into account in our transformation rules these types of transactions.

    We first developed EMOF models corresponding to our source and target meta-models, and then we implemented the algorithm using the transformation language QVT Operational Mappings. To validate our transformation rules, we conducted several tests. For example, we considered the class diagram (see Figure 7). After applying the transformation on the UML model, composed by the classes User and advertissment, we generated the target model (see Figure 9).

    Fig. 7 UML instance model

    1. Transformation rules

      By source model, we mean model containing the various classes of our business model. The elements of this model are primarily classes.

      Main algorithm:

      input umlModel:UmlPackage

      output crudModel:CrudProjectPackage begin

      create CrudProjectPackage crud create DaoPackage daoPackage for each e source model

      x = transformationRuleOnePojo(e) link x to dp

      x = transformationRuleOneIDao(e) link x to dp

      x = transformationRuleOneDaoImpl(e) link x dp

      end for

      create BusinessPackage bp; for each pojo target model

      x = transformationRuleTwoDto(pojo) link x to bp

      end for

      for each e source model

      x = transformationRuleTwoIService(e) link x to bp

      x = transformationRuleTwoSrviceImpl(e) link x to bp

      end for

      create UIPackage uip; create ViewPackage vp

      vp = transformationRuleThreeView(e) create ControllerPackage cp

      cp = transformationRuleThreeController(e) link vp to uip

      link cp to uip link dp to crud link bp to crud link uip to crud return crud


      function transformationRuleOnePojo(e:Class):Pojo begin

      create Pojo pj =

      pj.attributes = return pj


      function transformationRuleOneIDao(e:Class):IDao begin

      create IDao idao = 'I' 'Dao' idao.methods = declaration of e.methods return idao


      function transformationRuleOneDaoImpl(e:Class):DaoImpl begin

      create DaoImpl daoImpl = 'DaoImpl' for each e1 DaoPackage

      if = 'I' 'Dao' put e1 in interfaces

      end if end for

      link interfaces to daoImpl return daoImpl




      create ActionMapping am for each page viewPackage

      link page to actionForward create actionForm

      create Action action

      create ActionForward actionForward actionForm.input=page actionForm.attribute=action

      link page to actionForward link actionForward to action put action in am

      end for

      link am to cp return cp


      Figure 8 represents the first part of the code of the transformation of UML model source to N-tiers target model.


      create Dto dto =

      dto.attributes = p.attributes return dto


      function transformationRuleTwoIService(e:Class):IService begin

      create IService iservice = 'I' 'Service'

      iservice.methods = declaration of e.methods return iservice


      function transformationRuleTwoServiceImpl(e:Class):Service Impl


      create ServiceImpl serviceImpl = 'ServiceImpl' for each e1 BusinessPackage

      if = 'I' 'Service' put e1 in interfaces

      end if

      end for

      link interfaces to ServiceImpl return ServiceImpl


      function transformationRuleThreeView(e:Class):ViewPackage begin

      create ViewPackage vp

      for each e source model if 'remove' create JspPage page

      link page to vp

      end if end for return vp

      The transformation uses, in entry, a model of the UML type named umlModel, and in output a model of the N- tiers named crudModel.

      The entry point of the transformation is the method main. This method makes the correspondence between all the elements of the UMLPackage type of the input model and the element of the CrudProjectPackage type of the output model. The objective of the second part of this code is to transform a UML package into N-tiers package, by creating the elements of type package Dao, Business and Presentation. It is a question of transforming each class of package UML to Jsp page and Action in the View package, to DTO, IService and ServiceImpl in the Business package, and to Pojo, IDao and DaoImpl in the Dao package, without forgetting to give names to the different packages.


      function transformationRuleThreeController(e:Class):Contro llerPackage


      create ControllerPackage cp

    2. Result:

      Fig. 9 Generated PSM N-tiers Web model

      The first element in the generated PSM model is UIPackage which includes viewPackage that contains the JSPs, namely DisplayUserPage.jsp, Display- AdvertissmentPage.jsp,CreateUserPage.jsp, CreateAdvertissmentPage.jsp, UpdateUserPage.jsp, and UpdateAdvertissmentPage.jsp. Since the operation of the removal requires any form, we'll go to the controllerPackage element, which contains a single element ActionMapping. The latter contains eighteen delegating action proxy whose names are respectively DisplayXAction, CreateXAction, UpdateXAction, RemoveXAction, CreateXEndAction, UpdateXEnd- Action, where X should be replaced by User, and Advertissment. Operations for creation and update, add forms to enter new values. For this reason, we add CreateXEndAction and UpdateXEndAction.

      The second element in the generated PSM model is businessPackage which includes three services interfaces, three services implementations and three Dtos objects correspond to the two objects User and Advertissment. The last element in the generated PSM model is DaoPackage which contains three Pojos objects that contains their attributes, three Daos interfaces that contains methods with their parameters and their implementations.

      Fig. 10 Sample of the generated Web site

In this paper, we applied the MDA approach to generate the N-tiers web application based on UML class diagram to generate a skeleton of a social network and create appropriate advertisements to the users in function of them profiles.

This involves developing all meta-classes needed to be able to generate an N-tiers application respecting a MVC2, DI and DAO patterns, then we applied the approach by modeling and used the MOF 2.0 QVT standard as a transformation language. The transformation rules defined allow browsing the source model instance class diagram, and generating, through these rules, an XML file containing layers of N-tiers architecture according to our target model. This file can be used to produce the necessary code of the target application. The algorithm of transformation manages all CRUD operations. Moreover, it can be re-used with any kind of methods represented in the UML class diagram. In the future, this work should be extended to allow the generation of other components of Web application besides the configuration files. For instance, we will be able to provide part of user interface. Afterward we can consider integrating other execution platforms like PHP and DotNET.

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  28. NHibernate Framework home site (

  29. Puremvc framework (

  30. Panda, D., Rahman, R., Lane, D., EJB3 in action (Manning co., 2007).

  31. PicoContainer.

  32. Schincariol, M., Keith, M., Pro JPA 2: Mastering the Java Persistence API (Apress, 2009)

  33. SmartQVT documentation Copyright © 2007, Copyright(c) France Telecom. [34] Soler, E., Trujillo, J., Blanco, C., Fernandez-Medina, E., Designing Secure Data Warehouses by Using MDA and QVT. Journal of Universal Computer Science, vol. 15, no. 8 pages 1607-1641, 2009.

  1. Spring Source Web Site (

  2. SpringNet Web Site(

  3. Symfony open-Source PHP Web Framework Site (

  4. Zend Framework (

  5. UML Infrastructure Final Adopted Specifcation, version 2.0, September 2003, 15.pdf

  6. XML Metadata Interchange (XMI), version 2.1.1, December 2007,

Lamlili el Mazoui Nadori Yasser is pursuing his Ph.D at Mohammed First University in the Faculty of Sciences. He got a degree of an engineer in Computer Sciences from the National School of Applied Sciences at Oujda. He received his M.Sc. degree in New Information and Communication Technologies from the faculty of sciences and Techniques at Sidi Mohamed Ben Abdellah University. His research activities at the MATSI Laboratory (Applied Mathematics, Signal Processing and Computer Science) have focused on WebMarketing in social networks using MDA (Model Driven Architecture) approach.

Mohammed Erramdani teaches the concept of Information System at Mohammed First University. He got his thesis of national doctorate in 2001. His activities of research in the MATSI Laboratory (Applied Mathematics, Signal Processing and Computer Science) focusing on MDA (Model Driven Architecture) integrating new technologies XML, EJB, MVC, Web Services, etc.

Mimoun Moussaoui is a Professor, Vice-Director of High School of Technology and Responsible of the MATSI Laboratory (Applied Mathematics, Signal Processing and Computer Science) at Mohammed First University, Oujda, Morocco.

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