Linked Data Platform as a novel approach for Enterprise Application Integration

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  • Almost every organization today uses set of informations systems in their
  • The ideas that I will be presenting today have their origin in the work we are carrying out in the context of the ALM iStack project in collaboration with Bank of Santander.
    The objective of the project is to foster the adoption of Linked Data as an enabler technology for the integration of ALM applications in enterprise-grade environments.
    One of the challenges that we’ve found out during this first year of work is the necessity of ensuring that the data exchanged between the enterprise applications is consistent and valid while also keeping the integrity of the data in each of these applications.
  • http://www.slideshare.net/marin_dimitrov/linked-data-for-the-enterprise-opportunities-and-challenges?from_search=6
  • Linked Data Platform as a novel approach for Enterprise Application Integration

    1. 1. Center for Open Middleware Center for Open Middleware Linked Data Platform as a novel approach for Enterprise Application Integration Nandana Mihindukulasooriya Raúl García Castro Miguel Esteban Gutiérrez Asunción Gómez Pérez
    2. 2. Center for Open Middleware A real world integration use case 2 Same domain, similar concepts Different schemas, technologies, interfaces
    3. 3. Center for Open Middleware Different levels of EAI 3 • Physical Integration • Interconnection of devices via computer networks • Application Integration • Application connectivity (interfaces) • Data integration • Syntactic heterogeneity • Structural heterogeneity • Semantic heterogeneity • Process Integration • Orchestration • Choreography
    4. 4. Center for Open Middleware Enterprise Application Integration (EAI) 4 • Businesses processes spread across • Multiple domains / aspects • Multiple organizations • Application heterogeneity • Data model • Business logic and restrictions • Interfaces • Integrated applications • Share data and processing among any connected applications in the enterprise • Exchange business level information in formats and contexts that each application understand
    5. 5. Center for Open Middleware ALM iStack Project 5 • Objective: •To evaluate and foster the adoption of Linked Data technologies as the means for facilitating real-time application integration in enterprise-grade environments. Center for Open Middleware
    6. 6. Center for Open Middleware Linked Data for EAI 6 • What are the concrete benefits that Linked Data-based EAI brings when compared to the current approaches followed in industry? • Is this approach mature and enterprise ready? If not, which are the gaps / challenges ? • What are the lessons learned from the current projects using Linked Data for EAI?
    7. 7. Center for Open Middleware Why Linked Data ? 7 • Global identifiers that are dereferenceable for data • Easily accessible data using HTTP • Reconciliation of duplicate data • Avoid data silos • Typed links between data from different sources • Ability to traverse through data to find more information and context • Flexible graph based RDF data model • Easy to merge data from different sources • Multiple schemas can live together • Easy to evolve • Richer knowledge representation and modelling • Mappings without complex transformations • By adding more information rather than converting data Not an exhaustive list
    8. 8. Center for Open Middleware Linked Data 8 • Use URIs as names for things • Use HTTP URIs so that people can look up those names. • When someone looks up a URI, provide useful information, using the standards (RDF*, SPARQL) • Include links to other URIs. so that they can discover more things REST • Resource identification • Uniform interfaces • Self-descriptive messages • Hypermedia as the engine of application state (HATEOAS) • Stateless interactions
    9. 9. Center for Open Middleware Linked Data Platform http://www.w3.org/2012/ldp/ 9 • RESTful protocol for Read / Write Linked Data • Extensions to HTTP protocol • Pagination, ordering, partial updates, introspection, creation factories, collections • Standardization  Interoperability • Developed by W3C Linked Data Platform Working Group • IBM, Oracle, Fujistu, Base22, OpenLink Software, UPM, University of Oxford, DERI … • Progress • Currently addressing first round of public comments • Ready for the second public review soon • Current and potential implementations • OpenLink Virtuoso, Eclipse Lyo, ALM iStack middleware, Apache Marmotta (Incubating), Callimachus, Tabulator, rdflib.js, RWW.IO, …
    10. 10. Center for Open Middleware ALM Stack implementation 10 • A proof of concept implementation using W3C Linked Data Platform protocol for application integration • Application Lifecycle Management (ALM) domain • Integrating tools used in software development process • Uses extended version of OASIS Open Service Lifecycle Collaboration (OSLC) vocabularies • Open Source under Apache License
    11. 11. Center for Open Middleware Architecture of the Proof-of-Concept 11
    12. 12. Center for Open Middleware Lessons learned 12 • Incremental adaption • Native LDP support Vs LDP adapters • Publishing application data as Linked Data is not hard • Consuming link data is not as easy • Coreferences, provenance, licensing, reliability, business logic integration • A lot to learn from other areas • SOA, Web Services, Web Applications • Databases • Challenging enterprise requirements • Security, RDF data validation, transactions, performance, etc.
    13. 13. Center for Open Middleware Security 13 • Security requirements • Authentication, Authorization, Accounting (AAA) • Integrity, Confidentiality • Privacy, licensing • Can’t we just use what is used by current web apps ? • HTTP Basic Auth and Digest Access Auth • TLS / SSL • User-centric decentralized identity systems • OpenID, BrowserID • OAuth • Can we do more with Linked Data ? • WebID • Web Access Control • S4AC, PPO, RelBAC, and AMO ontologies • Future plans • W3C Web Access Control Working Group
    14. 14. Center for Open Middleware RDF Data Validation 14 • Application needs to do input validations • Don’t we already have schema languages ? • RDF Schema and OWL • Inferencing vs validation • Open World Assumption and Non-unique Name Assumption • Current approaches • OWL with integrity constraints (Alternative semantics for OWL) • SPARQL and SPIN-based solutions • Resource Shapes • and a lot more • https://www.w3.org/2012/12/rdf-val/agenda • Future plans • W3C RDF Validation Working Group
    15. 15. Center for Open Middleware Transaction in LDP 15 • Do we really need transactions ? • Data consistency is vital for some applications • What can we learn from databases and web apps ? • Distributed databases • ACID vs BASE • Current approaches for RESTful applications • Transactions as resources (ROA) • Try-Cancel/Confirm pattern • Optimistic Concurrency control methods (with E-tags) • Lockable resources
    16. 16. Center for Open Middleware and more topics 16 • Vocabulary Management and Discovery • Resource Versioning • Provenance management • Introspection Mechanisms • Event Processing • Application models, design patterns, anti-patterns • Resource identity management (coreference & naming governance) • Partial resource retrievals and queries • Performance and caching • Testing and monitoring
    17. 17. Center for Open Middleware Contact 17 • Questions, feedback, suggestions, collaborations … • Prof. Asunción Gómez Pérez asun@fi.upm.es contact.alm- istack@centeropenmiddleware.com
    18. 18. Center for Open Middleware Center for Open Middleware Fourth International Workshop on Consuming Linked Data 2013 October 22nd, 2013 Nandana Mihindukulasooriya, Raúl García Castro, Miguel Esteban Gutiérrez, Asunción Gómez Pérez Thank you

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