Now it is possible to conduct multi-step queries, use new qualifiers, wildcards and also to sort and handle large result flows. The subscription API set also provides for tracking registry activity and has been updated to support multi-registry environments.
In such a way, users can establish a subscription based on a specific query or set of entities that the user is interested in. In the case of a query-based subscription, if the result set changes within a given time span, the user is notified.
In the case of entity-based subscription, if the contents of one of those entities were to change, the user is notified. UDDI Version 3 introduces the notions of root and affiliate registries. The existence of a root registry enables its affiliates to share data with the root registry and among themselves with the knowledge that keys remain unique. The notion of registry topologies is thus enabled Draft Technical Note. Document identifier: 'uddi-spec-tc-tn-bpel April 15, Abstract processes are used to specify the order in which business partners may invoke operations.
Therefore it may be also of interest to exchange abstract processes between business partners. Software companies and standards bodies may use a UDDI registry to publish different types of services and business users may populate the registry with descriptions of services they support.
Without such a common approach, the certainty that users find BPEL4WS process definitions or Web services that implement a given part of such a definition is limited. DOC ]. Systinet has also added extensions to the core UDDI specification to provide additional functionality around management, security, inquiries, and other operations.
Out of the box, the UDDI registry is populated with sample data and a set of common taxonomies to support the tutorials and exercises in the documentation and allow services to be classified with existing industry standards In addition to providing support for versions 1 and 2, as well as parts of the version 3 UDDI specification, several enhancements have been provided.
The Java API is full featured and does an excellent job of hiding the communications details of interacting with the registry. The additional security and administrative functions provide unique management capabilities for the product.
The UDDI specification "enables businesses to quickly, easily, and dynamically find and transact with one another. UDDI enables a business to describe its business and its services, discover other businesses that offer desired services, and integrate with these other businesses. Version 3 recommends the usage of a key scheme based on DNS names rather than formatted Universally Unique Identifier UUID notation; this allows publishers to establish a key partition from a DNS record and then generate keys based on that partition.
The addition of digital signature support for entities in UDDI enables clients to establish the veracity of data registered in the UBR. By allowing UDDI entities to be digitally signed, a new level of data integrity and authenticity is delivered by UDDI; inquirers of a registry can now filter their queries, only requesting data that has in fact been signed.
The Universal Description, Discovery and Integration protocol is one of the major building blocks that enable successful Web service deployments. UDDI creates a standard interoperable platform that enables companies and applications to quickly, easily and dynamically find and use Web services.
UDDI is a cross-industry effort driven by major platform and software providers, as well as marketplace operators and e-business leaders within the OASIS standards consortium. Early availability of new V. Document Identifier: uddi-spec-tc-tn-wsdl-v2. Send comments to uddi-spec-comment lists. The UDDI data structures provide a framework for the description of basic service information, and an extensible mechanism to specify detailed service access information using any standard description language.
Many such languages exist in specific industry domains and at different levels of the protocol stack. WSDL complements the UDDI standard by providing a uniform way of describing the abstract interface and protocol bindings of arbitrary network services.
The purpose of this document is to clarify the relationship between the two and to describe a recommended approach to mapping WSDL descriptions to the UDDI data structures.
This mapping prescribes a consistent methodology to map WSDL 1. This mapping captures sufficient information from the WSDL documents to allow precise queries for Web services information without further recourse to the source WSDL documents, and to allow the appropriate WSDL documents to be retrieved once a match has been found.
The primary difference between this mapping and the one described in the existing Best Practice is that this mapping provides a methodology to represent individual Web services artifacts. April 2, This Speed-start community is an example of a set of public data that can be distinguished from all of the remaining public data within the same UDDI registry using a simple category based query. UDDI entries that are returned as part of the response to that query have been evaluated at publication time by the Speed-start validation service to ensure that they are Internet accessible Web services.
Each business, service, or technical model can contain a 'Category Bag' which holds keyed references that is, categorization codes, locators, or keywords that can specifically describe its type of business, physical location, and even the exact products and services it offers. These keyed references contain a reference to the classification system or taxonomy, a text field containing the value within that taxonomy and a text field for a human readable description.
Using this method of categorization, the UDDI Inquiry API can quickly and efficiently connect businesses and services to exactly the customers that need them The fourth taxonomy, UDDI classifications, is a taxonomy that was developed as part of the UDDI specification to provide useful values for categorizing the technical information of Web services.
The last taxonomy is useful for associating keywords with an entry, especially those that are not part of the name of the entry. The article provides a general overview of categorization and how it can be used in conjunction with validation services called by UDDI registries to provide a community or screened set of results according to category system specific criteria. The example of the Speed-start community is a simple example of the power of contextual validation services that can greatly enhance the quality of results corresponding to queries for data referencing a particular category or identifier system.
Using the information in this article, it should be possible to develop services that greatly enhance the results from UDDI registries such as service quality or reference services In InfoWorld April 09, Version 3 will help UDDI be adopted more in publicly available applications rather than the private, behind the firewall where it has primarily been used, said Bellwood during an interview following his presentation.
The security model in Version 3 allows for use of digital signatures and for querying based on data that has been signed. Users also can find out who published a specific directory item and data can be moved between registries.
The multi-registry feature enables private and public registries that can interact with each other. There will be root and affiliate registries, with root registry acting as authority for key spaces, which are analogous to DNS names. The root registry delegates key partitions. Affiliate registries follow rules of a particular root registry and are important for sharing of information but not replication Additionally, Version 3 is schema-driven, in which schemas have been separated for improved interoperability, Bellwood said.
Version 3 also enables development of industry-specific taxonomies, has peer-based replication for improved scaling, and has improved internationalization Document identifier: uddi-spec-tc-tn-wsdlwd.
Announced in a posting by John Colgrave ; comments are welcome for the next thirty days. These registries are run by multiple Operator Sites, and can be used by anyone who wants to make information available about one or more businesses or entities, as well as anyone that wants to find that information. There is no charge for using the basic services of these operator sites. Document identifier: uddi-spec-tc-tn-valuesetprovider Abstract: "Through the use of value sets in UDDI registries, businesses are able to find each other and the services that meet their needs.
This document provides guidelines for providers of value sets on how to model, register, and validate their value sets for use in UDDI Version 3. Category, identifier, and relationship type systems are all value sets.
Value sets play an important role within UDDI, because it is through their use that businesses are able to find each other and the services that meet their needs This paper guides the providers of value sets in the creation of value set services and in the registration of the value sets and these external value set services, following the recommended policies outlined in Chapter 9 of the UDDI Version 3 Specification From LooselyCoupled.
February 20, But users are beginning to see UDDI directories filling a practical role: adoption of UDDI is growing among web services pioneers; directory capabilities become more critical as the volume of services increases; but UDDI's origins have left design challenges; most users will acquire UDDI as a component of their web services platform The latest specification of UDDI, version 3, has moved on from its B2B origins, adding features designed to meet users' needs for private registries.
These include, for example, procedures for putting security keys into requests, or for enabling information transfer from one private registry to another. That said, the twists and turns in UDDI's evolution have also influenced its design and left some technical oddities.
UDDI defines three registry components, which in layman's terms are akin to the Yellow Pages phone book -- or more precisely, to the trio of white, yellow and green pages. The white pages list companies' contact details and the key services they provide; the yellow pages categorize businesses using agreed taxonomies, including where they operate; and the green pages provide the technical data other companies need in order to take advantage of the services on offer.
These three components will become useful to various individuals when organizations start to run between 20 to 50 services, suggests Mukund Balasubramanian, founder and chief technology officer of Infravio.
Developers, for example, will require information about services as they're built -- what resources went in, what configurations were used and so forth. System administrators will want to look at the services from the perspective of how they were deployed -- which servers they're running on, for example, and what the loads are.
The business user taxonomy, meanwhile, will help end users find the services they need Increasingly, the question of how and when to adopt UDDI will be taken by the vendors rather than their customers. This may save organizations the trouble of getting their heads round what UDDI is or why it's important, but it will leave questions such as managing service quality and the degree of interoperability with other platforms unresolved.
Ironically, those were the very same problems that stopped enterprises from eagerly adopting the B2B hubs of the dot-com boom. UDDI may have secured its place in the web services firmament by sidestepping such issues, but customers won't find it so easy to avoid facing up to them From WebServices. February 03, The latest changes result from feedback during UDDI's two years of history, and aim to ease the development of business-to-business e-commerce applications That eliminates the need for periodic administrative querying of UDDI, and makes incorporating new suppliers in the internal MIS system more timely While it is a very useful feature in support of business-to-business e-commerce, it remains to be seen how many UDDI 3-compliant registries will offer it Novell has extended its secure identity management expertise to a key Web services standard to help businesses more easily and confidently deploy Web services.
The company today announced the availability to developers of a new Universal Description, Discovery and Integration UDDI server that adds secure identity management to the UDDI standard, bolstering the security and simplifying the management of Web services registries. Since its inception in , adoption of the UDDI standard has been limited, partly because initial Web services deployments have been relatively small, but also because the standard lacks adequate provisions to ensure the security and management of registered services.
Novell Nsure UDDI Server allows businesses to register Web services and make them available to internal or external users, while leveraging the security and management inherent in eDirectory. Users, whether publishing or consuming services, can be required to first authenticate to the directory and verify their identity.
Equally important, those users, their access rights, and the registered Web services can be easily managed with eDirectory tools like Novell iManager, which are familiar to most network administrators November While the ability to categorize UDDI entries is a core part of the UDDI specification, the specification provides no API facility for querying to retrieve a list of values within a given categorization scheme.
This paper explains how and why to use this API. In particular, clients might query UDDI at run time to determine the best service to bind to. Because those queries may be based on categorization information, the client may need to dynamically navigate a categorization scheme to discover services NET Server It allows developers to access and traverse the hierarchy of a taxonomy that has been imported into a UDDI Services instance, giving developers the freedom to create applications that take advantage of the UDDI metadata strategy This is clearly an area that deserves some attention.
XSD ]. Reference: Version 1. The UDDI data structures provide a framework for the description of basic business and service information, and architects an extensible mechanism to provide detailed service access information using any standard description language. The purpose of this document is to clarify the relationship between the two, describe how WSDL can be used to help create UDDI business service descriptions.
This paper provides the technical background to this project, which complements other sources of information such as the NeSC project database. These show how UDDI could be used within a single e-Science project for discovery of its own businessEntities and services by high-level components such as applications and portals.
A partly moderated top-level service will build confidence, allow for testing but still provide the capability to register with the worldwide Universal Business Registry via the publisherAssertion capability as projects become more mature and wish to expose their services to international partners. It nevertheless remains to be seen how the proposed services could be used to enable electronic contract negotiation via the so-called 'tModels'.
Implementations of this architecture will show if the performance is acceptable for a variety of purposes We outline how UDDI might be used as a programmatic Web services information directory for e-Science projects and for services within a single project providing its community with multiple 'views' of sub-projects.
A private UDDI for the projects of the UK e-Science Programme offers the chance to test the publication of Web services and provide some degree of assurance that the published services will be acceptable to the wider community.
August According to IDC, the need for a UDDI repository is apparent at the corporate level, but on a global scale it is difficult to envision how a repository could be policed such that it serves as a benefit, rather than hazard, to business.
However, initial adoption rates are likely to be low until demand is driven by leading user organizations. UDDI will play an important role enabling this second phase, but implementation must be in a controlled manner if the expected benefits are to be achieved. IDC believes that UDDI deployment within the infrastructure of emarketplaces provides the level of control required within a format that creates business benefits for service providers and consumers as well as the operators of emarketplaces Information is registered in a unified format as defined by the UDDI specifications.
Information registered in the database of each registry node operator is regularly copied to the other operators' databases, assuring a consistent, worldwide network of registered information. As part of registering its own services in the registry, NTT Com plans to develop new business-to-business B2B Web Services and thereby establish the company as a new leader in this field.
With these advanced search capabilities, requesters can find businesses with services of specific names or in a specific category and vice versa to find services owned by businesses that match specified criteria. Such capabilities are not available with current UDDI search technology and these searches cannot be done without much effort. NET Server; see how to create custom categorization schemes that allow users to solve particular problems in description and discovery.
The ability to attribute metadata to services registered in UDDI, and then run queries based on that metadata is absolutely central to the purpose of UDDI at both design time and run time. NET Server. It explains how to create custom categorization schemes that allow users to solve particular problems in description and discovery Each of the properties in the bag comes from a known classification system Adorning UDDI entities with these property bags provides entities with the critical metadata and context that can be used to discover and consume them.
The corollary to adorning an entity with properties is the ability to search for that entity based on those properties. Queries are written that look for properties based on the classification scheme they are associated with.
In other words, in writing a query "to find services in the United States", one must provide not only the appropriate value that represents the United States but also the classification scheme from which that value originates. In this way, queries can be written that have contextual intelligence about the properties being searched for. Other features make the UDDI query engine able to handle a range of scenarios.
For example, queries can do an exact match of all the properties in a bag or can match just one property in a bag. Or, a query can search across bags contained in both providers and services. Through these two parallel facilities -- adorning properties to entities and searching for entities based on well-known properties -- UDDI entities are reified.
Below, the article will delve into exactly how to accomplish this Classification and typed metadata is key to the ability of UDDI to solve the problems of reification of data both in the enterprise and in the public sphere.
Well-architected Web service software applications will employ UDDI as an infrastructure, taking advantage of the many possibilities of employing this complex categorization system to different entities for both design-time and run-time usage Web-services Specification to Play Key Role. Most experts believe they will do that through repositories based on a specification called universal description and discovery interface UDDI. In addition to helping users and applications find specific Web services, UDDI will allow them to query data that describes how those services are used.
UDDI also specifies a set of APIs to interact with the registry and provides references on how to interface with applications. UDDI registries have basic white and yellow pages models for finding services. Solution providers will increasingly find UDDI implemented in various forms of repositories, including application servers, middleware, databases and directories. The move coincided with the release of version 3 of the UDDI spec, which gives the standard key enterprise capabilities, such as support for XML-based security and policy management, internationalization and a subscription API that generates messages when changes are made to a UDDI repository.
And late last month, Oasis announced the formation of a technical committee that will develop the technical standards and best practices. In order for Web services to proliferate, customers and solution providers should be looking at UDDI as a key component of that infrastructure.
Sutor describes it as a catch So, what will make UDDI useful? It's likely to proliferate within organizations for sharing business logic among applications. For example, Microsoft's Kurt says, if an enterprise wants to make a change-of-address service originally built for an HR application for other apps, a UDDI registry can help internal developers, or even end users, find the software components and business rules for using those programs Gartner FirstTake.
Reference: FT More than 20 major IT companies have said they will participate, including most major software infrastructure providers The unprecedented cooperation by industry participants will do much to secure widespread acceptance of UDDI, which provides a common format for enterprises to identify and link to new Web services In general, enterprises will not need UDDI initially, either behind the firewall or when they deal with trusted business partners.
Standard mechanisms need to be defined for such functions as supporting granular access, denial-of-service protection and nonrepudiation.
Don Box, an architect in Microsoft Corp. I predict two years from now we won't have this conference' Box said Microsoft has been moving awfully fast with its Global XML Architecture GXA for Web services; an interoperability demonstration between IBM and Microsoft here at the conference [serves] as evidence that the technology is constantly improving Box posed the question of why Microsoft is pursuing a Web services strategy.
Microsoft has bet the company on this thing and it is our intention to make all software integration based on Web services. Microsoft White paper at GotDotNet. It provides a standard way for organizations and individuals to distribute news on the Internet. The question of discovery and aggregation of RSS Feeds has the following requirements: 1 Programmatically publish an RSS Feed; 2 Associate metadata classification, geography, ownership, etc.
It is in meeting these requirements that UDDI serves as a solution. UDDI has a flexible classification system that can be employed to attribute those feeds with a range of different metadata in an extensible way. Feeds in UDDI has been published. The code sample provides a sample. An installable. The application is meant only as a sample and is not optimized for usage. There is no caching of feeds, for example, in the sample application.
The paper opts for a particular solution; feedback and comments on the solution are welcomed In Network World August 14, Network World Directories Newsletter. But more and more directory vendors such as Sun, Computer Associates and Novell are tossing in the towel and simply developing UDDI front ends for their directory products rather than trying to convince the world that the UDDI repository isn't needed. Access security was ably demonstrated by SAML recently. Specifying Web services interfaces is part of the purview of the ebXML committees.
Adapting someone else's initiative is very often much more efficient and productive than re-inventing the wheel The service processes the request and returns the result.
Applications obtain information about how to contact a service along with other useful data from business registries such as the Universal Description, Discovery, and Integration UDDI project, a platform-independent open framework for describing services and and businesses and integrating them via the Internet. Currently more than companies support UDDI Paul Tremblett shows how your Java applications can contact business registries, such as UDDI, and retrieve information from them We are pleased to announce that UDDI.
All members will be able to actively participate in all aspects of the specification design and development. OASIS, a global consortium that drives the development, convergence and adoption of e-business standards, will manage the future development of the UDDI specification and related activities.
Existing business registries will continue to be made available by registry operators. Under OASIS, the UDDI specification will continue to advance as a standard, and interested companies can continue to incorporate the specification into future business and software plans.
UDDI also will benefit from additional expertise in shaping, developing and coordinating the fundamentals for open standards based business interoperability.
The UDDI Community is comprised of more than business and technology leaders working together to enable companies and applications to quickly, easily, and dynamically find, and use Web services. This transition delivers on the goals laid out in the UDDI project's original charter. Along with the transition, UDDI. The next step for UDDI 3. Once that is passed, the first committee meeting will happen within 45 days, he said.
The group recently submitted its third version for review. In The Register July 26, That announcement will also be made Tuesday []. Since its launch in September - the apex of the b2b, b2c and online market places boom - UDDI has seen mixed fortunes NTT Communications is expected to launch its own registry this fall. Doubts remain, though.
Hewlett-Packard Co signed an agreement to operate a registry, but that registry's future is in doubt after HP pulled out of Java middleware and web services. HP failed to return Computerwire calls for comment. Meanwhile, some early adopters are bypassing UDDI entirely. Deloitte Consulting principal and e-business chief technology officer Michael DeBellis reports early adopters are hard-coding together web services, by-passing UDDI and defeating the vision.
Anecdotal evidence says some early adopters are putting web services data into directories based on LDAP, a well-established directory technology, instead of UDDI. Observers feel UDDI is in danger of being sidelined by events.
Where it is being used is behind the firewall,' DeBellis said. The specification improves interoperability and replication between registries behind those firewalls. In short, just as each enterprise application embodies the specific characteristics of the business process it supports, so should the enabling technologies like UDDI support a variety of infrastructural permutations. For UDDI, this business requirement dictated an increased emphasis on providing a means to define the relationships among a variety of UDDI registries, not simply access to one, public registry of business services, the UBR.
Although the UDDI specification included from the start concepts like replication and distribution among server peers, earlier definitions of the standard did not fully address the nuts-and-bolts required for the more sophisticated, hierarchical model now dictated The Version 3 specification addresses several features that support an emphasis on registry interaction. While relatively little of the existing features have changed, a handful of key functional concepts have been added or expanded to accommodate the variety of new taxonomies.
Some of the most important issues addressed in the Version 3 specification include: 1 Registration key generation and management; 2 Registration subscription API set; 3 XML digital signatures Thus, while the specification does not define specific policies around security and authorization, it does provide the means for specific implementations to provide for these needs. The primary benefit of digital signatures is to ensure that data has not been altered since it was signed and published, that ownership of a particular registry entity can be validated, and confidence that data transferred among registries can be assured The number of public node operators has also increased from two to three, with a fourth operator expected to release its node shortly.
The number of businesses registered among the three public UBR nodes recently surpassed 10, with over 4, individual Web services available. All registered data is now being replicated between the UBR nodes. The UDDI Community is comprised of more than business and technology leaders working together to enable companies to quickly, easily, and dynamically find, and transact with one another.
As a cornerstone of the emerging Web services architecture, UDDI will benefit businesses of all sizes by creating an open platform-independent specification. As a part of the UDDI project, a global business registry has been established to allow businesses to publish and discover Web services Joint construction will begin in mid-July and operations will commence in October this year.
The UDDI Project is a worldwide initiative to enable businesses, irrespective of industry, to quickly, easily and dynamically find one another, leading potentially to new business-to-business e-commerce.
UDDI enables a company to describe its business and services on the Internet, to discover other companies that offer desired services, and to negotiate and settle with those companies The UDDI Business Registry is a global public online catalog for companies to register their business and the services they offer.
The registry allows a business to easily locate a supplier to meet its needs and then to negotiate and settle e-transactions. It is a significant part of the framework supporting Web services. Today's joint announcement paves the way for commercial e-commerce expansion in the Asian region. The registry will operate in IBM's WebSphere runtime environment and will use IBM's DB2 software for data repository, thereby enabling construction of the registry system based on Web services standards It is meant to complement the UDDI tool kit available to the Java development community, and gives customers the alternative of using a different Web services development platform.
The rapid application development that the Python language provides is leveraged by any system working within the Web services arena and utilizing the UDDI4Py package. Expanding on the foundation of Versions 1 and 2, Version 3 offers the industry a specification for building flexible, interoperable XML Web services registries useful in private as well as public deployments.
The Version 3 specification offers clients and implementers a comprehensive and complete blueprint of a description and discovery foundation for a diverse set of Web services architectures. In InternetWeek June 20, Most experts still believe that UDDI will ultimately play a key role in the adoption of Web services.
At its core, UDDI provides a place for businesses to describe and register -- and for other companies to discover -- the Web services interfaces they are making available to the world.
UDDI has been anything but a slam-dunk thus far. The technology hasn't been as flexible as many developers would like. And participation in public UDDI registries as been low. But it's still early in the game. Many early UDDI server implementations were solely for proof-of-concept. Also, many early servers were public deployments, while much of the early work with Web services turned out not to be over the public Internet but behind corporate firewalls. But if such architectures are to scale, developers need a place to register their services so they can be easily found and consumed.
Ultimately, criticizing early UDDI specifications and deployment efforts was beside the point -- the technology won't really be needed until Web services take firm hold on the enterprise landscape. Despite its early flaws, UDDI is making progress. The current, 2. Market-watchers expect additional steps forward this summer with the release of version 3.
Yet even more significantly, vendors are beginning to bring UDDI more into the enterprise mainstream. For instance, the past few weeks have seen growing amounts of activity around mapping UDDI repositories into Lightweight Directory Access Protocol LDAP directories, which in their own right have emerged as a key enabling e-business technology.
Security is already emerging as a key stumbling block for Web services deployments; existing LDAP-based authorization and access schemes can help jump-start those efforts, [Nathan] Owen said Despite the early hurdles UDDI has faced, developers still believe in the technology, according to a study released this week. According to a poll of developers by Flashline, a provider of software reuse solutions, 55 percent of respondents are currently evaluating internal or external UDDI registries, while 11 percent are already using a UDDI registry to organize access to Web services In InfoWorld June 11, The package will feature Sun's new UDDI Universal Description, Discovery, and Integration registry product for setting up registries of Web services available within a firewall or via an extranet.
Additionally, Sun on June 19 [] will detail a new version of its Java-based application server, also part of the developer platform. With the Sun ONE Developer Platform, the company seeks to solve the problem of isolated "silos" of development in an enterprise It ships in six to eight weeks.
It features a plug-in to the Studio product and ships this summer. Sun is integrating its application server into the Solaris OS. NLP programming automates the translation process between computers and humans by manipulating unstructured data words in the context of a specific task conversation. View Full Term. By clicking sign up, you agree to receive emails from Techopedia and agree to our Terms of Use and Privacy Policy.
Universal Description Discovery and Integration UDDI is a set of specifications defining a registry service for Web services and for other electronic and non-electronic services. A UDDI registry service is a Web service managing information about service providers, service implementations and service metadata. Consumers then use UDDI to discover Web services suiting their requirements and obtain the service metadata needed to consume those services.
UDDI is the Internet's equivalent of a telephone directory, where businesses register themselves and other businesses or consumers look them up. A UDDI registry works in the following manner:.
When UDDI was introduced in , its role as a central pillar of the Web service industry looked very promising. Only six years later, in the beginning of , the three companies announced they were shutting down their public UBRs. While the technology concept was proven and UDDI versions 2. UDDI is an open industry initiative, enabling businesses to discover each other and define how they interact over the Internet.
A registry of all web service's metadata, including a pointer to the WSDL description of a service. As the time of writing this tutorial, Microsoft and IBM sites had implemented the 1.
Dozens of PIPs already exist.
0コメント