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Virtuoso Universal Server Overview
 

Virtuoso Universal Server Overview

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Virtuoso Universal Server Overview Product Family

Virtuoso Universal Server Overview Product Family

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    Virtuoso Universal Server Overview Virtuoso Universal Server Overview Presentation Transcript

    • Virtuoso Product Family © 2008 OpenLink Software, All rights reserved. Orri Erling - Program Manager, Virtuoso
    • Virtuoso Product Categories
      • Virtual Database Engine
      • Native Data Management (multi-model covering: SQL, RDF, XML, and Free Text)
      • Discussion Platform
      • Mail Proxy Services
      • Client Connectivity Kit
      • Virtuoso Universal Server
      © 2008 OpenLink Software, All rights reserved.
    • Virtual Database Engine
      • External ODBC or JDBC accessible SQL Data Sources
      • External XML based Data Sources
      • External SOAP or RESTful Web Services
      • External RDF Data (e.g. Oracle)
      • Custom Data Sources via Server Extensions API
      © 2008 OpenLink Software, All rights reserved. RDF, XML, SQL Conceptual Views over:
    • Virtual Database Engine Contd.
      • SQL Queries over Remote SQL, RDF, XML, and Web Services based Data Sources
      • SPARQL Queries over Remote SQL, RDF, XML, and Web Services based Data Sources
      • XQuery/XPath Queries over Remote RDF, SQL, and XML based Data Sources
      • Web Services based access to Remote RDF, SQL, XML, and other Web Services based Data Sources
      © 2008 OpenLink Software, All rights reserved.
    • Virtual Database Engine Contd.
      • Distributed Query Optimization
        • Locality Sensitive Query Cost Optimization (Collocated Joins, Pass-Through Queries, and Array Parameters)
        • Deductively Abstracts SQL Dialect Differences (via ODBC and JDBC metadata call exploitation)
        • Message Latency Factored into Cost Model
        • Hash Joins Used When Appropriate, Replacing Multiple Remote Lookups with Single Sequential Read
      • 2-Phase Commit for Distributed Transactions
        • MS DTC for Windows
        • Tuxedo on Unix
      © 2008 OpenLink Software, All rights reserved.
    • Virtual Database Engine Contd.
      • ATTACH TABLE Statement incorporates Remote Table, Indexes and Statistics into Local Virtuoso Schema
      • Allows Incorporation of SQL Functions and Stored Procedures from Remote Relational Database Engines
      • Support for Remote XML, Full Text Indexing for Oracle, Microsoft SQL Server
      © 2008 OpenLink Software, All rights reserved.
    • Native Data Management – Relational (RDBMS)
      • Native SQL 92/2K Engine
      • Rich Procedure Language (PSM-95 based)
      • Database Engine Optimized for SMP Performance
      • Native Full Text Indexing
      © 2008 OpenLink Software, All rights reserved.
    • RDBMS Features - Transactions
      • Full ACID Properties
      • Checkpoint + Roll Forward Log, Optional Archiving of Logs
      • Uncommitted/Read Committed/Repeatable/Serializable Isolations
      • Non-blocking Read Committed Shows Latest Committed Versions of Uncommitted Updated Rows
      • Can Work as XA/MS DTC Resource Manager
      © 2008 OpenLink Software, All rights reserved.
    • RDBMS Features - SQL
      • Full SQL 92 with many 2K Features
      • SQLX, XPATH, XSLT, Xquery
      • SQL 2K Objects, Implementation in SQL/Java/.net
      • Transparent Mixing of Local and Remote Tables
      © 2008 OpenLink Software, All rights reserved.
    • RDBMS Features – Query Optimization
      • Cost Based Optimization
      • On The Fly Sampling of Table/Column/Literal Key Cardinalities
      • Fixed Statistics for Deterministic Query Plans
      • Loop/Hash/Merge Join
      • SQL Options for Explicitly Specifying Query Plan
      © 2008 OpenLink Software, All rights reserved.
    • RDBMS Features - Storage Engine
      • Rows Stored At Leaves of Primary Key Index Tree
      • Non PK Indexes Refer to Row By Value of PK
      • Bitmap Index
      • Full Text Index
      • Striping Across Disks, No Separate Files Per Table/Key
      • Incremental Online backup
      © 2008 OpenLink Software, All rights reserved.
    • RDBMS Features - Run Time Hosting
      • User Defined Type via Java or .NET Objects Hosted in Process
      • User Defined Types Persisted in LOB Columns
      • Java/.NET Methods Called Transparently From SQL
      • ‘ C” based Plugin Mechanism for adding SQL Functions
      © 2008 OpenLink Software, All rights reserved.
    • RDBMS Features - Security
      • SQL Role Based Security, Column/Table/View/Procedure Level
      • Row Level Security With Policy Functions
      • A Policy Function Can Add Extra Conditions to Queries/Updates Depending on User, Time, Other Considerations
      © 2008 OpenLink Software, All rights reserved.
    • Data Center Features - Clustering
      • Combine Multiple Servers for Massive Scale and Parallelism
      • All Servers Show the Same SQL/RDF Data and Application Logic, A SQL or Web Client Can Connect to Any for the Same Service
      • Data Partitioning Specifiable Index by Index
      • Optional Replicated Storage of Partitions for More Load Balancing, Fault Tolerance
      • Shared Nothing Architecture, Works With Commodity Hardware and Networks
      © 2008 OpenLink Software, All rights reserved.
    • Data Center Features - Query Penalization
      • Latency: One Message Round Trip is 20 Single Row Random Lookups
      • Virtuoso Divides Queries into Collocated Fragments, Ships All Filtering, Aggregation, Joining to Where the Data Is.
      • Sends Arrays of Hundreds of Operations at a Time, Whenever Possible
      © 2008 OpenLink Software, All rights reserved.
    • Data Center Features - Transactions
      • Full ACID Properties
      • Two Phase Commit with Single Phase Optimization
      • Detection of Distributed Deadlocks Without Timing Out
      • Each Cluster Node Keeps Own Transaction Log
      • No External Monitor, Virtuoso Handles Distributed Recovery Cycle By Itself
      • Transactions/Logging Can BE Disabled for Bulk Load etc.
      © 2008 OpenLink Software, All rights reserved.
    • Data Center Features - Parallel SQL
      • Transparent Map-Reduce Style Execution of Specified Partitioned SQL Functions/Procedures
      • PL Extensions for Async Remote Execution of SQL Code, With and Without Transactional Semantics
      © 2008 OpenLink Software, All rights reserved.
    • Data Center Features - Futures
      • Dynamic Deployment, Adding and Removing Cluster Nodes Without Interruption of Service
      • Keeping Data in Small, Self-Contained, Easily Relocatable Mini-Partitions
      © 2008 OpenLink Software, All rights reserved.
    • SQL Client Connectivity - Data Access Drivers
      • Cross Platform ODBC 3.0 Drivers
      • JDBC 2.0 Drivers
      • OLE-DB Provider
      • ADO.NET Provider
      • XMLA Provider
      © 2008 OpenLink Software, All rights reserved.
    • Native Data Management - XML
      • Native XML Data Type
      • SQLX + Oracle Compatible XML Functions in SQL
      • Document Centric Persistence of XML with Special Support in Text Index
      • XSLT
      • XQuery
      • XML Views – XML Mapping Schema based Views of SQL Data Sources
      © 2008 OpenLink Software, All rights reserved.
    • Native RDF Data Management
      • Native RDF Quad Storage (Physical Quads)
      • SQL Enhanced With RDF IRI and Typed/Language Tagged Data
      • Bitmap Indices and Key Compression for Compact Storage
      • Selectable Index Scheme, Optionally Allows Queries Against Union of All Graphs
      • Optional Full Text Index of Literals
      • Reuses SQL Cost Model and Execution Engine With RDF Tailored Statistics
      © 2008 OpenLink Software, All rights reserved.
    • RDF Data Services – Client Connectivity
      • SPARQL Protocol
      • Jena Storage Provider
      • Sesame Storage Provider
      • Redland Storage Provider
      • Linq2Rdf Storage Provider
      • SPASQL
        • SPARQL execution within SQL Processor
      • Plethora of Built-In Functions, Stored Procedures, Web Services
      © 2008 OpenLink Software, All rights reserved.
    • RDF Data Services – SPARQL
      • Full SPARQL, Language and Protocol Support
      • Jena Compatible SPARUL for Create Graph, Insert, Update, and Delete
      • Extensions for Aggregates & Grouping
      • Nested Queries, SQL-Like Existence and Value Subqueries
      • Expressions in Result Sets
      • Path Expressions for Compact Notation, Also in Expressions
      • Full Text & XPath Magic Predicate Extensions
      © 2008 OpenLink Software, All rights reserved.
    • RDF Data Services – Inference
      • Backward Chaining Inference Support, No Materialization of Entailed Triples needed for:
        • Subclass and Subproperty Hierarchies
        • OWL sameAs for Instances, Classes and Properties
        • OWL equivalentClass and equivalentProperty
        • Inference Enabled at Query or Individual Triple Pattern Level
      © 2008 OpenLink Software, All rights reserved.
    • Linked Data Services - RDF-ization Middleware
      • Declarative RDF Views (or Covers) over SQL Data
      • In-Built RDF Middleware (Sponger) for RDF-ization of Harvested Web Content (bulk ingest or “on the fly”)
      • Extended SPARQL Against Mapped and Stored RDF
      • RDF-ization Cartridges for 30+ non RDF data sources
        • Used by SPARQL Processor
        • Used by in-built Content Crawler
      • Cache Invalidation based on HTTP Caching Rules
      • Configurable URI dereferencing via pragmas for node selection and path traversal
      © 2008 OpenLink Software, All rights reserved.
    • Linked Data Services - Deployment
      • URL Rewrite Rules combined with SPARQL for flexible association of URIs and RDF Data Sets
      • Proxy (or wrapper) URIs construction for materializing Linked Data “on the fly” from existing Web information resources
      • REST or SOAP based Web Services that expose functionality to Web Clients such as OpenLink Data Explorer, Marbles, Zitgist Data Explorer, DISCO, Tabulator etc.
      © 2008 OpenLink Software, All rights reserved.
    • RDF Data Services – RDF Views over SQL Data Sources
      • SPARQL Data Definition Statements for RDB Mapping
      • Declare Correspondences Between Graph/Triple Patterns and SQL Objects
      • Specify Mapping Between URI's and Keys , Supporting All Data Types, Multipart Keys
      • Not Restricted to Table per Class and Column per Property
      • Use Arbitrary Joins, SQL Functions and Search Conditions
      • Automatically Generate Basic Class per Table, Property per Column Mapping of Given SQL Schema
      © 2008 OpenLink Software, All rights reserved.
    • RDF Data Services - RDF Views Contd.
      • Evaluate Arbitrary SPARQL Against an RDF View
      • In One Query, Some Graphs May Come from Views, Others From Stored RDF
      • RDF Views Generate a Single SQL Statement, The IRI Generation and IRI Parsing is Only in Selection and Constant Expressions
      • SQL Has Full Optimization Possibilities and the Generated SQL Does not Depend on Virtuoso Specifics
      • Hence, RDF Views Are Efficient for Querying Remote, non-Virtuoso SQL Data
      © 2008 OpenLink Software, All rights reserved.
    • RDF Data Services - Clustering
      • Cluster-Optimized RDF Loader and SPARUL
      • RDF-Aware Data Partitioning
      • Automatic Statistics Sampling Across Cluster for Best Query Plan
      © 2008 OpenLink Software, All rights reserved.
    • RDF Benchmarks
      • TPC H With SPARQL Extensions and RDF Views
      • LUBM
      • Berlin SPARQL Benchmark with Triples and with RDF Views
      © 2008 OpenLink Software, All rights reserved. Bundled With:
    • Web Services Platform – HTTP Services
      • HTTP/1.1 and HTTPS Server for Static and Dynamic Content
      • Dynamic Web Pages in PHP, Virtuoso SQL Procedures, ASP .net, Others
      • SOAP and Rest Web Services in Virtuoso PL, Java, .NET
      • DAV
      © 2008 OpenLink Software, All rights reserved.
    • Web Services Platform - WebDAV
      • Documents Stored in Virtuoso Database
      • ACL Based plus Unix Style Security, SQL User Accounts and Roles Own Documents and Collections
      • Automatic RDF Metadata Extraction
      • Optional Full Text Indexing and Versioning
      • Dynamic Collections for Alternate Views of Directory Hierarchy
      © 2008 OpenLink Software, All rights reserved.
    • Web Services Platform – SOAP & REST
      • SOAP 1.1/1.2 End Points Exposing SQL Procedures in All SOAP Styles
      • Automatic WSDL Generation
      • SQL Extensions for Declaring Full XML Schema Signatures for End Points
      • Exposing Java and .net via SOAP
      • Dynamic Web Pages and XML Functions for REST Services
      • XMLA for SQL Access over SOAP
      © 2008 OpenLink Software, All rights reserved.
    • Web Services Platform - Dynamic Server Pages
      • Configure a Virtual Directory as Executable
      • Publish Dynamic Web Pages in PHP, Virtuoso PL, Ruby, PERL, ASP .net Without Using External Web Server
      © 2008 OpenLink Software, All rights reserved.
    • Administration Services
      • Web Interface for Setup of Web End Points, SQL, XML, RDF Functions
      • SQL Functions for Full Programmatic Admin Access
      • Simple Tuning, Only Specify File Layout and Amount of Threads and Memory to Use
      © 2008 OpenLink Software, All rights reserved.
    • Virtuoso RDF Applications
      • Dbpedia
      • BIO2RDF
      • Neurocommons
      • Zitgist , Pingthesemanticweb , Musicbrainz
      © 2008 OpenLink Software, All rights reserved.
    • Product
      • Open Source and Closed Source Versions, Closed Source AddsVirtual Database and Clustering
      • All Code, Applications, Samples, Docs in Single Download
      • Minimal Installation Consists of Single Executable + Config File
      • Web Admin Interface and Bundled ODS Collaborative Apps Suite
      • Available for All Linux, Unix, Windows, 32 and 64 bit
      • Available Preinstalled on Amazon EC2, With Optional Preloaded Dbpedia, BIO2RDF, Other RDF Data Sets
      © 2008 OpenLink Software, All rights reserved.