Modeling All the Way Up...Modeling All the Way Down

Modeling All the Way Up… Modeling All the Way Down Richard Mark Soley, Ph.D. Chairman and CEO People Share Design with Models Models—abstractions—are ancient in Engineering Architecture Ship-building Traffic control Workflow Maintenance … People Talk to Computers with Symbols while (x < 10) { printf (stdout, array[x]); x++; } What’s wrong with this (non)-picture? Let’s look at Enterprise IT as an example. The integration picture is always changing Executive decisions, mergers & acquisitions have a way of surprising us… Service Oriented Architecture Remember MQSeries? How about QNX? …or MSMQ? A Little Bit of OMG History… Now Here’s the Next Best Thing Here’s a Thought… Perhaps we should focus on • agility • reusable design • performance metrics • expected change. Otherwise we’re likely to be… Roadkill on the Info Highway …doing things “the way we always do them” isn’t the answer. How Can We Deal with This? Make adaptability the design center for your architecture. Modeling is the Focus Modeling, especially graphical modeling is A natural human approach to design Thousands of years old Allows expression of design separate from implementation, as implementations change Allows for long-term maintenance & integration long- Is an accelerator of implementation Is technology-independent technology- 18th century B.C. multiplication table OMG’s Mission Since 1989 Develop an architecture, using appropriate technology, for modeling & distributed application integration, guaranteeing: reusability of components interoperability & portability basis in commercially available software Specifications freely available Implementations exist Member-controlled not-for-profit Who Are OMG? ABN Amro Ericsson Kaiser Permanente PRISM Adaptive Fujitsu klocwork SAP BEA General Electric MITRE SAS Institute Borland Harris NASA Select Boeing Hewlett Packard NEC Siemens CA Hitachi NIST Softeam Citigroup IBM NTT DoCoMo Sun Compuware IONA Northrop Grumman Unisys DaimlerChrysler io Software OASIS Visa EDS Kennedy Carter Oracle W3C OMG’s Best-Known Successes Common Object Request Broker Architecture CORBA® remains the only language- and platform-neutral language- platform- interoperability standard Unified Modeling Language UMLTM remains the world’s only standardized modeling language Common Warehouse Metamodel CWMTM, the integration of the last two data warehousing initiatives Meta-Object Facility Meta- MOFTM, the language for defining languages XML Metadata Interchange XMITM, the XML-UML standard XML- Protecting Software Investment The problem remains Tracking the next best thing, retaining staff; Protecting your investment in existing software base; Integrating what you’ve built, With what you’re building, With what you will build! Architectures ought to be Stable descriptions lasting decades Capable of communicating the designers’ vision Testable, simulatable, executable simulatable, The Model Driven Architecture OMG’s Model Driven Architecture (MDATM) initiative is aimed precisely at this problem You have an opportunity to increase your bottom line by integrating your assets Industry standards support that goal by future-proofing your future- application design The MDA will help you integrate the mix you have today, and give you an architecture to support the unexpected Focus on integrating legacy applications Ensure smooth integration of COTS applications Models are testable and simulatable The aim: a 20-year software architecture 20- What is Model Driven Architecture? A Better Way to Specify and Design & Develop Based on modeling standards like UML, MOF Is extensible to all modeling problems Supports full lifecycle: analysis, design, implementation, deployment, maintenance, evolution & integration with later systems Builds in Interoperability and Portability Lowers initial cost and maximizes ROI Modeling: Key Concepts Emphasis on transformation techniques Based on a standard metamodeling framework; there will be many metamodels, and plenty of metamodels, modeling languages (including UML) Clear semantics, expressed consistently Potentially many levels of abstraction Enduring architectures are the focus Maintenance and integration aren’t pretty, but they are the main job of IT Graphical languages as well as textual ones Some generic, some domain-specific, just like the domain- textual language world Model Driven Architecture Leveraging UML is Critical The Unified Modeling Language is the successor to the dozens of OO A&D notations of the early ’90s Result of an OMG standardization completed in ’97 Complemented with metadata (MOF) and XML interoperability specifications (XMI) Venture-neutral worldwide certification easily available Venture- Standardization primed the market Hundreds of books Dozens of commercial tools Widely available training Supported by an open process UML 2.0 updates came from 54 companies UML Myths MDA is just about code generation MDA is just programming with UML MDA and DSL are different things UML is too big & complex Code Generation is just one feature Sometimes we’ll be able to generate all the Code Schemas Deployment descriptors Sometimes we won’t; but we’ll still have the modeling values of Clear, sharable graphical expression Flexible transformation for agile retargeting An enduring description of the system Architecture matters (that’s why MDA) MDA is more than UML! MDA is a meta-design pattern: Discover multiple syntaxes for one semantic Capture that semantic in a machine-readable machine- model Standardize the transformations to multiple syntaxes UML is a good general design and implementation language, but MOF provides the integration across languages MDA and DSL are the Same! Domain-Specific Languages (DSL’s) are a way to capture design semantics in languages closely fitted to specific problem areas (application domains) Do we really want every programmer using a different language It pays to have a central way to query, view and transform languages (MOF) MDA actually offers two routes to standardized DSL’s: MOF-defined languages and UML profiles UML is a Toolbox! If all you’ve got is a hammer, every problem looks like a nail But if you have a whole toolbox of tools, you can choose the tool that best fits the problem A big toolbox is an asset MDA is Fractal There is a general pattern to MDA: Discover multiple syntaxes for a single semantic Derive & design a model which underlies that semantic Develop transformations between those models. Shifting Gears: Business Modeling Model the Business Optimize Business Processes Operate the Business Design the Systems Implement the Systems Test & Deploy Systems Can We Integrate Modeling? Model the Business Optimize Business Processes Operate the Business Design the Systems Test & Deploy Systems Implement the Systems Integrating the Modeling Jobs Model the Business Optimize Business Processes Operate the Business Design the Systems Test & Deploy Systems Implement the Systems Business Operation Model Business Model Business Process Process Operation Optimization Systems Testing & Design Deployment Implementation Modeling is Pervasive s ent pon om ne ss C BPMN, etc. i Bus UML e tu r hi tec Arc te d MOF, CWM, etc.