Visual paradigm uml online

The visual field refers to the total area in which objects can be seen in the side (peripheral) vision as you focus your eyes on a central point. The visual field refers to the tot...

Visual paradigm uml online. Draw UML diagrams online. Visual Paradigm Online features an intuitive online diagram creator and a large variety of technical and business diagram templates. It also supports remote working, online meeting and online workshop with real-time collaboration facilities. Create Your Free Component Diagram.

Class Diagram Templates by Visual Paradigm. A class diagram is one of the most widely used UML diagram types. As a type of static structure diagram, class diagram describes the structure of an object-oriented system by showing the system's classes, their attributes, operations (or methods), and the relationships among objects.

Yes, our platform offers a free online PDF editor. You can access a comprehensive set of professional PDF editing tools without any cost. Enjoy the convenience of managing, editing, and sharing your PDF files seamlessly, all within a user-friendly online environment.Visual Paradigm Tutorials. These tutorials provide step-by-step instructions on specific topics. New tutorials are being added regularly. Please check back often for our latest …Flowchart Maker and Online Diagram Software. draw.io is free online diagram software. You can use it as a flowchart maker, network diagram software, to create UML online, as an ER diagram tool, to design database schema, to build BPMN online, as a circuit diagram maker, and more. draw.io can import .vsdx, Gliffy™ and Lucidchart™ files .Fortran was the world's first procedural programming language, and it brought with it a whole host of improvements to the art and science of programming. It made it easier than ev...Jun 20, 2016 ... ... visual-paradigm ... Introduction to Visual Paradigm - UML Diagram ... Use Case Diagram for Online Shopping System.Deployment diagrams are essentially class diagrams that focus on a system's nodes. You use deployment diagrams to model the static deployment view of a system. For the most part, this involves modeling the topology of the hardware on which your system executes. We typically use classes to model the concepts and things in a problem domain, and ...Kontak. Visual Paradigm berkantor pusat di Hong Kong. Kami dapat dihubungi dengan cara berikut: Visual Paradigm adalah penyedia terkemuka dan diakui secara global untuk solusi perangkat lunak Transformasi Bisnis dan TI. Hal ini memungkinkan organisasi untuk meningkatkan kelincahan bisnis dan TI serta mendorong inovasi.Download Visual Paradigm, with cross-platform EA tool, UML tool, BPMN tool, project management tool. No risk and no obligation to try.

Visual Paradigm Online adalah editor UML online yang populer dan kuat, dengan banyak fitur diagram sederhana dan canggih yang mendukung kebutuhan diagram UML yang berbeda. Untuk pemula, ada banyak contoh dan templat UML untuk membantu Anda memulai membuat diagram UML sendiri. Easy-to-Use online Flowchart tool. Flowchart is one of the most widely-used diagrams that represents an algorithm, workflow or process, showing the steps as boxes of various kinds, and their order by connecting them with arrows. You can create a flowchart from scratch, or simply start from a flowchart template available in our flowchart software.Kontak. Visual Paradigm berkantor pusat di Hong Kong. Kami dapat dihubungi dengan cara berikut: Visual Paradigm adalah penyedia terkemuka dan diakui secara global untuk solusi perangkat lunak Transformasi Bisnis dan TI. Hal ini memungkinkan organisasi untuk meningkatkan kelincahan bisnis dan TI serta mendorong inovasi.Table of Contents hide 1 Introduction 2 The Visual Paradigm Online Free Edition 2.1 Key Features of the Free UML Diagram Tool 3 Conclusion Introduction In the dynamic world of software development, creating clear and concise UML diagrams is crucial for effective communication and successful project implementation. For those seeking a …Visual Paradigm Online is available for creating professional-look Component Diagram. As a web-based Component Diagram maker, it is cross platform and can work very well on Windows, Mac OS, and Linux. The diagram editor comes with an intuitive interface that supports creating diagrams with drag-and-drop.Relational Database Design with ERD. Drawing ERD with Visual Paradigm. Organize diagrams in context basis. Using package diagram. Navigation between package and child diagrams. 免费的 UML 教程,UML 建模的数据库教程,用例建模,需求捕获,ERD,DFD,BPMN,往返工程等等。.

Perform the steps below to create a UML state machine diagram in Visual Paradigm. Select Diagram > New from the application toolbar. In the New Diagram window, select State Machine Diagram. Click Next. Enter the diagram name and description. The Location field enables you to select a model to store the diagram. Click OK. Work Breakdown Structure. X Chart. Y Chart. Yourdon Demarco DFD. Yourdon and Coad Diagram. IOS Wireframe. FREE online UML templates and examples. Draw professional UML with online UML maker. Sign up to create a free online workspace and start today. Try Visual Paradigm Free. Free UML tutorials, database tutorials for uml modeling, use case modeling, requirements capturing, ERD, DFD, BPMN, round-trip engineering, and more. Visual Paradigm Online ist ein beliebter und robuster Online-UML-Editor mit vielen einfachen und fortgeschrittenen Diagrammfunktionen, die verschiedene UML-Diagrammbedürfnisse unterstützen. Für Anfänger gibt es eine Vielzahl von UML-Beispielen und -Vorlagen, die Ihnen den Einstieg in die Erstellung eigener UML-Diagramme … Visual Paradigm Online juga menawarkan ratusan contoh dan template UML bagi Anda untuk membuat diagram Anda sendiri dengan cepat. Edisi Gratis dari Visual Paradigm Online gratis untuk penggunaan non-komersial dan tidak hanya mendukung UML tetapi juga alat ER dan perancang Bagan Organisasi. As a top-rated diagramming tool, Visual Paradigm Online incorporates an intuitive drag-and-drop sequence diagram editor that allows you to create professional software design quickly and easily. Visual Paradigm Online also offers hundreds of diagram templates and templates for you to create your own UML diagrams in quick.

Zen master.

In this chapter, you will learn CRC card diagram, and see how to draw it. Teaches you how to draw CRC card diagram. 5. Candidate pane view. 1. Drawing CRC card diagram. Class-Responsibility Collaborator (CRC) card visualizes classes in card-like presentation.Visual Paradigm was by far the most intuitive and comprehensive. Get it FREE today - UML + SysML + ERD software. No risk and no obligation. One stop shop for UML …PREPARING. VP Online is your all-in-one online drawing solution. Create professional flowcharts, UML diagrams, BPMN, ArchiMate, ER Diagrams, DFD, SWOT, Venn, org charts and mind map. Works cross-platforms: Mac, Windows, Linux. Sign-up for a …VP Online is the answer. The System Context Diagram tool allows you to visualize the relationships among system objects easily and quickly. It comes with a System Context Diagram editor that is concise and intuitive, designers will not be disturbed by the cumbersome popups and messages. Instead of a blank wireframe, you may start with a System ...Supports sharing of the pool of licenses among your team. $ 129. Learn More. All prices are listed in US dollars. Enjoy fast and simple modeling with Visual Paradigm Modeler, an award-winning UML modeler that features UML, Requirement Diagram, BPMN, ERD, DFD and more. Visual Paradigm Modeler makes modeling easy and fast.Overview. Visual Paradigm Online (VP Online) offers a versatile range of diagramming tools for creation of Flowcharts, Mind Map, technical drawings (e.g UML, ERD, DFD, PERT), business diagrams (BPMN, Org. Chart, SWOT, Value Chain) and more.The Visual Paradigm Online office add-in allows you to embed an interactive drawing into your Microsoft file, supporting both …

Visual Paradigm Online ... Loading... ... Activity diagram is another important behavioral diagram in UML diagram to describe dynamic aspects of the system. Activity Diagram is similar to a business work flow diagram or simply a flowchart with much richer semantics. It describes the system activities, or the person who does the activity, and the sequential flow of these activities. A state machine diagram is used to model the State machine diagram is a UML diagram used to model the dynamic nature of a system. It visualizes the dynamic behavior of individual class objects, use cases, and entire systems. ... Visual Paradigm Online features an easy online State Machine Diagram maker and a large variety of technical …A state machine diagram is used to model the State machine diagram is a UML diagram used to model the dynamic nature of a system. It visualizes the dynamic behavior of individual class objects, use cases, and entire systems. ... Visual Paradigm Online features an easy online State Machine Diagram maker and a large variety of technical …Mining companies are supposed to reconstruct and redevelop. But often, they simply leave a mess behind. Our free, fast, and fun briefing on the global economy, delivered every week...Visual Paradigm is the market #1 visual modeling and diagramming online platform for team collaboration. Create UML, flowcharts, ERDs, PERT, BPMN diagrams, infographics, customer journey map, Analytical Charts, network diagrams, and more with the best International award-winning products. Try now and kick-start with our huge collection …Kontak. Visual Paradigm berkantor pusat di Hong Kong. Kami dapat dihubungi dengan cara berikut: Visual Paradigm adalah penyedia terkemuka dan diakui secara global untuk solusi perangkat lunak Transformasi Bisnis dan TI. Hal ini memungkinkan organisasi untuk meningkatkan kelincahan bisnis dan TI serta mendorong inovasi.A sequence diagram is a type of UML (Unified Modeling Language) diagram that represents the interactions between objects or components in a system in a chronological order. ... Visual Paradigm Online simplifies the process of creating sequence diagrams with its user-friendly interface and rich collection of templates and examples. …Some employers really do want only a simple page of education and work credentials. Most, though, would prefer to hire someone who can explain their accomplishments with greater de...Check out this visual explanation of customer lifetime value (CLV), and how retention and satisfaction play into customer value. Trusted by business builders worldwide, the HubSpot...Aug 2, 2011 ... ... visual-paradigm ... Introduction to Visual Paradigm - UML Diagram ... Class diagram for online shopping system in uml | Class diagram in startuml.Flowchart Maker and Online Diagram Software. draw.io is free online diagram software. You can use it as a flowchart maker, network diagram software, to create UML online, as an ER diagram tool, to design database schema, to build BPMN online, as a circuit diagram maker, and more. draw.io can import .vsdx, Gliffy™ and Lucidchart™ files .

Cloud architecture design tool: AWS, Azure, Google Cloud, IBM, Oracle, Alibaba, Tencent. Powerful Flowchart, Floor plan, Mind map and Venn diagram tool. Process Map Designer with templates like Customer Journey Mapping, Competitor Analysis, Root Cause, etc. Draw Package Diagram and collaborate with others online. No Download Needed.

Visual Paradigm's online ERD software makes database design fast and straight-forward. The ERD diagramming tool has all the ERD symbols and connectors you need to create professional, industry-standard ER model. No matter you want to create a conceptual, logical or physical data model, our online ERD tool just works perfectly. iPhone: Tracking things like running mileage, weight, sleep, practice time, and whatever else is great, but unless you really visualize that data, it's pretty useless. Datalove pro...Clarity: The “4 + 1” model offers a clear and structured way to visualize and communicate different aspects of system architecture. Comprehensiveness: By breaking down the architecture into five distinct views, it ensures that all essential aspects of the system are considered. Alignment: The model helps align the technical architecture ...GoF Design Patterns - Factory Method. UML Class Diagram: Association Class and Self Association. GoF Design Patterns - Memento. GoF Design Patterns - Strategy. Class Diagram: Auctioneer and Bidder. Class Diagram Example: A Token-Ring Based LAN. GoF Design Patterns - Chain of Responsibility. GoF Design Patterns - Flyweight. Here is an online UML tool that's both wonderfully easy to use and refreshingly intuitive - Visual Paradigm Online. With features like Resource Catalog, alignment guide and a rich set of formatting functions, you can draw UML diagrams conveniently and quickly. Visual Paradigm Online Free Edition is free for non commercial use. It supports UML ... Visual Paradigm Online Free Edition features a Free activity diagram editor that comes with a wealth of great features, UML examples and templates. It helps you create professional and impressive software design blueprints easily and quickly. ... Visual Paradigm Online is a great piece of UML software for people who want to jump in and … Visual Paradigm Online (VP Online) Free Edition is a FREE online drawing software developed for the community. Draw free diagrams with an easy-to-use online drawing tool without limitations such as, number of diagrams, size of project file, etc. You own the diagrams you created for personal and non-commercial purposes. The FREE drawing tool, Visual Paradigm Online (VP Online) Free Edition, supports UML, ERD and Organization Chart. You can draw Use Case Diagram quickly through the intuitive UML drawing editor. The free UML tool has with no ad, no limited period of access and no limitations such as, number of diagrams, number of shapes, etc. Draw UML freely. ...VP Online features a powerful UML diagram tool that lets you create state machine diagram and other UML diagrams easily and quickly. You can construct your diagrams with drag and drop, save your work in cloud …Enjoy visual modeling with UML. Visual Paradigm enables software development teams to rapidly create quality software designs with UML.

Pimsleur languages.

Nextier online banking.

A ferramenta de desenho GRATUITA, Visual Paradigm Online (VP Online) Free Edition, suporta UML, ERD e Organograma. Pode desenhar rapidamente o Diagrama de Casos de Uso através do editor de desenho UML intuitivo. A ferramenta UML gratuita não tem anúncios, não tem um período de acesso limitado e não tem limitações como o número de ... Oct 13, 2023 ... For those seeking a free, web-based UML software solution, Visual Paradigm Online emerges as a perfect blend of simplicity and powerful ...You can generate Java code from specific class or classes. To generate code from class/classes: Select the class (es) and right click on them, then select Java Round-trip > Generate Code from the popup menu. In the Generate Code dialog box, specify the source path where you want the code to be generated. Model is a UML element that acts as a ...Deployment diagrams is a kind of structure diagram used in modeling the physical aspects of an object-oriented system. They are often be used to model the static deployment view of a system (topology of the hardware). Create UML diagrams online. Visual Paradigm Online features an easy online UML diagram maker and a large variety of technical ...The free UML diagram software provided by VP Online lets you create professional UML quickly and easily. Create UML Deployment Diagram with the drag and drop interface, design with the rich set of UML shapes, keep your UML drawing in a cloud workspace and work collaboratively with your team. You can also output and share your works via …Table of Contents hide 1 Introduction 2 The Visual Paradigm Online Free Edition 2.1 Key Features of the Free UML Diagram Tool 3 Conclusion Introduction In the dynamic world of software development, creating clear and concise UML diagrams is crucial for effective communication and successful project implementation. For those seeking a free, web-based …Deployment diagrams is a kind of structure diagram used in modeling the physical aspects of an object-oriented system. They are often be used to model the static deployment view of a system (topology of the hardware). Create UML diagrams online. Visual Paradigm Online features an easy online UML diagram maker and a large variety of technical ... Aqui está uma ferramenta UML online que é maravilhosamente fácil de utilizar e refrescantemente intuitiva - Visual Paradigm Online. Com características como o Catálogo de Recursos, guia de alinhamento e um conjunto rico de funções de formatação, pode desenhar diagramas UML de forma conveniente e rápida. ….

The FREE drawing tool, Visual Paradigm Online (VP Online) Free Edition, supports UML, ERD and Organization Chart. You can draw Use Case Diagram quickly through the intuitive UML drawing editor. The free UML tool has with no ad, no limited period of access and no limitations such as, number of diagrams, number of shapes, etc. Draw UML freely. ...Visual Paradigm Online Free Edition features a Free activity diagram editor that comes with a wealth of great features, UML examples and templates. It helps you create professional and impressive software design blueprints easily and quickly. ... Visual Paradigm Online is a great piece of UML software for people who want to jump in and …Perform the steps below to create a UML state machine diagram in Visual Paradigm. Select Diagram > New from the application toolbar. In the New Diagram window, select State Machine Diagram. Click Next. Enter the diagram name and description. The Location field enables you to select a model to store the diagram. Click OK. The FREE drawing tool, Visual Paradigm Online (VP Online) Free Edition, supports UML, ERD and Organization Chart. You can draw Use Case Diagram quickly through the intuitive UML drawing editor. The free UML tool has with no ad, no limited period of access and no limitations such as, number of diagrams, number of shapes, etc. Draw UML freely. How do you make the visual information generated by your brand even more effective? By trying these 6 visual storytelling tips. The human brain absorbs visual information 600 times...C++ Round-Trip Engineering. Generate ANSI C++ source code from your UML class model, and let the UML model reflect the change you made in source code. Round-trip engineering helps keep your C++ source code and software design synchronized. Every time you generate code or update UML model, changes will be merged.Package Diagram Templates by Visual Paradigm. Package diagram, a kind of structural diagram, shows the arrangement and organization of model elements in middle to large scale project. ... Create professional UML diagrams online. Visual Paradigm Online features an intuitive online diagram software and a large variety of technical and … Activity diagram is another important behavioral diagram in UML diagram to describe dynamic aspects of the system. Activity Diagram is similar to a business work flow diagram or simply a flowchart with much richer semantics. It describes the system activities, or the person who does the activity, and the sequential flow of these activities. Check out this design created with @visualparadigm ! https://online.visual-paradigm.com/community/share/untitled-1pe9jcd2dz #infographic Visual paradigm uml online, VP Online is the answer. The System Context Diagram tool allows you to visualize the relationships among system objects easily and quickly. It comes with a System Context Diagram editor that is concise and intuitive, designers will not be disturbed by the cumbersome popups and messages. Instead of a blank wireframe, you may start with a System ..., Download Visual Paradigm Community Edition. FREE for non-commercial use only Version: 17.1 Build number: 20240307. Download Visual Paradigm ... I reviewed over 20 CASE tools which supported UML. Visual Paradigm was by far the most intuitive and comprehensive. - Professor Melody Y. Ivory-Ndiaye, University of Washington, Seattle. …, Visual Paradigm Online is great for the drag-and-droppers out there who need a reliable UML editor. Not only can you draw UML with a full set of pre-defined notations,, but you can even insert your own text, hyperlinks and external graphics, which makes it so convenient to demonstrate some special concepts in your own UML diagrams., Ein UML-Editor online. Zeichnen Sie UML-Diagramme ganz einfach mit einer Online-UML-Software, die leistungsstarke UML-Diagrammwerkzeuge, fliegende UML-Syntaxprüfungen und eine übersichtliche Benutzeroberfläche bietet. Visual Paradigm Online unterstützt UML-Diagramme wie Klassen-, Anwendungsfall-, Sequenz-, Aktivitäts-, Bereitstellungs ..., In this chapter, you will learn CRC card diagram, and see how to draw it. Teaches you how to draw CRC card diagram. 5. Candidate pane view. 1. Drawing CRC card diagram. Class-Responsibility Collaborator (CRC) card visualizes classes in card-like presentation., Learn all essential skills of software design and modeling including, UML, BPMN and SysML with Visual Paradigm. Free tutorial. 4.6 (3,299 ratings) 61,248 students. 5hr 14min of on-demand video., Without a doubt, Visual Paradigm Online is the best UML Diagram software to create UML Component Diagrams. Want to create UML diagrams now? We've put together some UML diagram examples below to help you get started. Click on a UML template/example to view it, or click the edit button to start editing., Visual Marketing: 99 Proven Ways for Small Businesses to Market with Images and Design is the new book by Small Business Trends founder Anita Campbell, along with New York City des..., Ein UML-Editor online. Zeichnen Sie UML-Diagramme ganz einfach mit einer Online-UML-Software, die leistungsstarke UML-Diagrammwerkzeuge, fliegende UML-Syntaxprüfungen und eine übersichtliche Benutzeroberfläche bietet. Visual Paradigm Online unterstützt UML-Diagramme wie Klassen-, Anwendungsfall-, Sequenz-, Aktivitäts-, Bereitstellungs ..., Create Deployment Diagram online. The free UML diagram software provided by VP Online lets you create professional UML quickly and easily. Create UML Deployment ..., Table of Contents hide 1 Introduction 2 The Visual Paradigm Online Free Edition 2.1 Key Features of the Free UML Diagram Tool 3 Conclusion Introduction In the dynamic world of software development, creating clear and concise UML diagrams is crucial for effective communication and successful project implementation. For those seeking a …, UML State Machine Diagrams (or sometimes referred to as state diagram, state machine or state chart) show the different states of an entity. State machine diagrams can also show how an entity responds to various events by changing from one state to another. State machine diagram is a UML diagram used to model the dynamic nature of a system., In 2021, there were globally at least 2.2 billion people who had a near or distance vision impairment. Why is it important to create websites for visually impaired people? In the p..., Check out this visual explanation of customer lifetime value (CLV), and how retention and satisfaction play into customer value. Trusted by business builders worldwide, the HubSpot..., The UML software provided by VP Online lets you create beautiful use case diagrams in a snap. Create use case diagrams easily with the drag and drop editor, design with the rich set of UML symbols, keep your design in a cloud workspace and work collaboratively with your team. You can also export and share your works via a collection of image ... , Check out this design created with @visualparadigm ! https://online.visual-paradigm.com/community/share/uml-18sfe3mf8v #infographic, Kontak. Visual Paradigm berkantor pusat di Hong Kong. Kami dapat dihubungi dengan cara berikut: Visual Paradigm adalah penyedia terkemuka dan diakui secara global untuk solusi perangkat lunak Transformasi Bisnis dan TI. Hal ini memungkinkan organisasi untuk meningkatkan kelincahan bisnis dan TI serta mendorong inovasi., Visual Marketing: 99 Proven Ways for Small Businesses to Market with Images and Design is the new book by Small Business Trends founder Anita Campbell, along with New York City des..., A ferramenta de desenho GRATUITA, Visual Paradigm Online (VP Online) Free Edition, suporta UML, ERD e Organograma. Pode desenhar rapidamente o Diagrama de Casos de Uso através do editor de desenho UML intuitivo. A ferramenta UML gratuita não tem anúncios, não tem um período de acesso limitado e não tem limitações como o número de ... , Yes, our platform offers a free online PDF editor. You can access a comprehensive set of professional PDF editing tools without any cost. Enjoy the convenience of managing, editing, and sharing your PDF files seamlessly, all within a user-friendly online environment., Visual Marketing: 99 Proven Ways for Small Businesses to Market with Images and Design is the new book by Small Business Trends founder Anita Campbell, along with New York City des..., Visual Paradigm Online Free Edition is a free, easy-to-use UML tool with tons of diagramming features to let you create UML diagrams quickly online. The UML tool is free for non commercial purposes. You can draw UML diagrams entirely with drag-and-drop. You can add your own images into your drawings., UML drawing tool - Visual Paradigm Online (VP Online) Free Edition. Unlike many other online drawing tools, VP Online has incorporated the Resource Centric interface, which makes Sequence Diagram editing very intuitive and straight forward. The free UML editor comes with no ad, no limited period of access and no limitations such as, number of ..., The main purpose of a component diagram is to show the structural relationships between the components of a system. In UML, Components are made up of software objects that have been classified to serve a similar purpose. Components are considered autonomous, encapsulated units within a system or subsystem that provide one or more interfaces., Cloud architecture design tool: AWS, Azure, Google Cloud, IBM, Oracle, Alibaba, Tencent. Powerful Flowchart, Floor plan, Mind map and Venn diagram tool. Process Map Designer with templates like Customer Journey Mapping, Competitor Analysis, Root Cause, etc. Draw Package Diagram and collaborate with others online. No Download Needed. , Activity Diagram Example: Fork and Join. Activity Diagram: Branching Decision. Activity Diagram Example: Start and End Points. Simple Activity Diagram: Handling Incident. UML Activity Diagram Example: ATM. Relationships between Activities and Business Entities. ATM Activity Diagram with Swimlanes. Activity Diagram Example: Planning a Show., Oct 31, 2016 ... Tutorial: INFOST 340 Activity Diagram for Use Case Scenario - Visual Paradigm. 13K views · 7 years ago ...more ..., Enjoy visual modeling with UML. Visual Paradigm enables software development teams to rapidly create quality software designs with UML., If you use Amazon Web Services, you will love our online AWS Architecture diagram tool. The online AWS diagram tool provides you with full set of latest AWS icons (2019 AWS icons) to use in your AWS Architecture design. Besides, you can also connect those AWS shapes with traditional UML shapes like nodes, components and artifacts in UML deployment diagram for …, The online UML tools provided by VP Online lets you create professional Activity Diagrams in a snap. Construct your diagram easily with drag and drop, format shapes with different colors and fonts, keep your design in a cloud workspace and work collaboratively with your team. You can also export and share your works via a collection of image ... , Table of Contents hide 1 Introduction 2 The Visual Paradigm Online Free Edition 2.1 Key Features of the Free UML Diagram Tool 3 Conclusion Introduction In the dynamic world of software development, creating clear and concise UML diagrams is crucial for effective communication and successful project implementation. For those seeking a free, web-based …, UML Class Diagram: Ticket Selling. Edit this Template. Visual Paradigm Online is available for creating professional-look Class Diagram. As a web-based Class Diagram maker, it is cross platform and can work very well on Windows, Mac OS, and Linux. The diagram editor comes with an intuitive interface that supports creating diagrams with …, Relational Database Design with ERD. Drawing ERD with Visual Paradigm. Organize diagrams in context basis. Using package diagram. Navigation between package and child diagrams. 免费的 UML 教程,UML 建模的数据库教程,用例建模,需求捕获,ERD,DFD,BPMN,往返工程等等。.