Chapter1.Overview
Abstract
A quick overview on Virtuoso providing answers to simple questions that may already be in mind.
Table of Contents
- 1.1. What is Virtuoso?
- 1.2. Why Do I Need Virtuoso?
- 1.3. Key Features of Virtuoso
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- 1.3.1. XML Document Storage & Creation
- 1.3.2. Web Page Hosting
- 1.3.3. Web Services Creation & Hosting
- 1.3.4. WebDAV Compliant Web Store
- 1.3.5. Content Replication & Synchronization
- 1.3.6. Transparent Access To Heterogeneous Data
- 1.3.7. Mail Delivery & Retrieval Services
- 1.3.8. NNTP Aggregation & Serving
- 1.4. Virtuoso FAQ
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- 1.4.1. What is the storage cost per triple?
- 1.4.2. What is the cost to insert a triple (for the insertion itself, as well as for updating any indices)?
- 1.4.3. What is the cost to delete a triple (for the deletion itself, as well as for updating any indices)?
- 1.4.4. What is the cost to search on a given property?
- 1.4.5. What data types are supported?
- 1.4.6. What inferencing is supported?
- 1.4.7. Is the inferencing dynamic, or is an extra step required before inferencing can be used?
- 1.4.8. Do you support full-text search?
- 1.4.9. What programming interfaces are supported? Do you support standard SPARQL protocol?
- 1.4.10. How can data be partitioned across multiple servers?
- 1.4.11. How many triples can a single server handle?
- 1.4.12. What is the performance impact of going from the billion to the trillion triples?
- 1.4.13. Do you support additional metadata for triples, such as time-stamps, security tags etc?
- 1.4.14. Should we use RDF for our large metadata store? What are the alternatives?
- 1.4.15. How multithreaded is Virtuoso?
- 1.4.16. Can multiple servers run off a single shared disk database?
- 1.4.17. Can Virtuoso run on a SAN?
- 1.4.18. How does Virtuoso join across partitions?
- 1.4.19. Does Virtuoso support federated triple stores? If there are multiple SPARQL end points, can Virtuoso be used to do queries joining between these?
- 1.4.20. How many servers can a cluster contain?
- 1.4.21. How do I reconfigure a cluster, adding and removing machines, etc?
- 1.4.22. How will Virtuoso handle regional clusters?
- 1.4.23. Is there a mechanism for terminating long running queries?
- 1.4.24. Can the user be asynchronously notified when a long running query terminates?
- 1.4.25. How many concurrent queries can Virtuoso handle?
- 1.4.26. What is the relative performance of SPARQL queries vs native relational queries?
- 1.4.27. Does Virtuoso Support Property Tables?
- 1.4.28. What performance metrics does Virtuoso offer?
- 1.4.29. What support do you provide for concurrent/multithreaded operation? Is your interface thread-safe?
- 1.4.30. What level of ACID properties is supported?
- 1.4.31. Do you provide the ability to atomically add a set of triples, where either all are added or none are added?
- 1.4.32. Do you provide the ability to add a set of triples, respecting the isolation property (so concurrent accessors either see none of the triple values, or all of them)?
- 1.4.33. What is the time to start a database, create/open a graph?
- 1.4.34. What sort of security features are built into Virtuoso?
- 1.5. Tips and Tricks
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- 1.5.1. How Can I convert triples with geo properties to geometries to use spartial query?
- 1.5.2. How Can I execute SPARQL queries containing '$' character using ISQL?
- 1.5.3. How can I find on which table deadlocks occur?
- 1.5.4. How Can I configure parameters to avoid out of memory error?
- 1.5.5. What are "Generate RDB2RDF triggers" and "Enable Data Syncs with Physical Quad Store" Linked Data Views options?
- 1.5.6. How to Manage Date Range SPARQL queries?
- 1.5.7. How can I see which quad storages exist and in which quad storage a graph resides?
- 1.5.8. Can I drop and re-create the DefaultQuadStorage?
- 1.5.9. How to display only some information from RDF graph?
- 1.5.10. Is it possible to have the SPARQL endpoint on a different port than the Conductor?
- 1.5.11. How to enable the Virtuoso Entity Framework 3.5 ADO.Net Provider in Visual Studio 2010?
- 1.5.12. How Can I Control the normalization of UNICODE3 accented chars in free-text index?
- 1.5.13. How Can I define graph with virt:rdf_sponger option set to "on"?
- 1.5.14. How do I use SPARUL to change a selection of property values from URI References to Literals?
- 1.5.15. How is a Checkpoint performed against a Virtuoso Clustered Server?
- 1.5.16. How can I use CONSTRUCT with PreparedStatements?
- 1.5.17. How can perform SPARQL Updates without transactional log size getting exceed?
- 1.5.18. How can I write custom crawler using PL?
- 1.5.19. How Can I Get an exact mapping for a date?
- 1.5.20. How Can I Get certificate attributes using SPARQL?
- 1.5.21. How can I make Multi Thread Virtuoso connection using JDBC?
- 1.5.22. How Do I Perform Bulk Loading of RDF Source Files into one or more Graph IRIs?
- 1.5.23. How to exploit RDF Schema and OWL Inference Rules with minimal effort?
- 1.5.24. How can I dump arbitrary query result as N-Triples?
- 1.5.25. How do I bind named graph parameter in prepared statement?
- 1.5.26. How can I insert binary data to Virtuoso RDF storage in plain queries and with parameter binding via ADO.NET calls?
- 1.5.27. How can I insert RDF data from Visual Studio to Virtuoso?
- 1.5.28. How does default describe mode work?
- 1.5.29. What should I do if the Virtuoso Server is not responding to HTTP requests?
- 1.5.30. What CXML params are supported for the SPARQL URL pattern?
- 1.5.31. How can I replicate all graphs?
- 1.5.32. What is best method to get a random sample of all triples for a subset of all the resources of a SPARQL endpoint?
- 1.5.33. How can I replicate all graphs?
- 1.5.34. How can I use SPARQL to make Meshups?
- 1.5.35. How can I use the net_meter utility before starting the ingestion to a cluster?
- 1.5.36. How can I use the LOAD command to import RDF data?
- 1.5.37. How can I delete graphs using stored procedure?
- 1.5.38. How can I use SPARUL to add missing triples to a Named Graph?
- 1.5.39. How can I use the SPARQL IF operator for SPARQL-BI endpoint?
- 1.5.40. How can I handle checkpoint condition?
- 1.5.41. How can I incorporate Content Negotiation into RDF bulk loaders?
- 1.5.42. Virtuoso Linked Data Deployment In 3 Simple Steps?
- 1.5.43. What are the differences between create, drop, clear and delete Graph?
- 1.5.44. How can I perform search for predicate values?
- 1.5.45. How can I use INSERT via CONSTRUCT Statements?
- 1.5.46. How to clear graphs which are related to empty graphs?
- 1.5.47. How can I use sub-queries to enable literal values based joins?
- 1.5.48. How can I execute query with labels preference order?
- 1.5.49. How can I get object datatype?
- 1.5.50. How Can I Backup and Restore individual table(s) and individual index(s)?
- 1.5.51. What bif:contains free-text options can I use?
- 1.5.52. What SPARQL Endpoint Protection Methods can I use?
- 1.5.53. How do I assign SPARQL role to SQL user?
- 1.5.54. How Do I Gecode Data?
- 1.5.55. How Can I Delete a Specific Triple Across Graphs?
- 1.5.56. How Do I Use NOT EXISTS in SPARQL Query?
- 1.5.57. How Do I Use MINUS in SPARQL Query?
- 1.5.58. How Do I Use Transitive SPARQL Query Options and Exploit Inference Rules?
- 1.5.59. What is the difference between the functions SAMPLE, GROUP_CONCAT and GROUP_DIGEST?
- 1.5.60. How Do I use CONSTRUCT with objects which are value of aggregate function?
- 1.5.61. How Do I Clean Up Errant Data using SPARQL Update Language?
- 1.5.62. How to Use SPARQL to add missing isDefinedBy relations to an Ontology?
- 1.5.63. How Can I execute load of sql dump from jdbc?
- 1.5.64. How Can I Use MODIFY to update triples?
- 1.5.65. How Can I execute INSERT/DELETE (SPARUL) statements against a WebID? protected SPARQL endpoint?
- 1.5.66. How can I make HTTP Logging and Recording in Virtuoso?
- 1.5.67. Quad Store Data Loading via Virtuoso's In-built Content Crawler?
- 1.5.68. What is the ShortenLongURIs Virtuoso configuration parameter?
- 1.5.69. How Can I send SOAP requests to Virtuoso SPARQL Endpoint?
- 1.5.70. How Can I Delete Triples containing blank nodes?
- 1.5.71. How Can I Get a full explain plan for a simple SPARQL query?
- 1.5.72. How Can I Use Expressions inside CONSTRUCT, INSERT and DELETE {...} Templates?
- 1.5.73. How to optimize bif:dateadd in SPARQL query using selective index-friendly filter?
- 1.5.74. How can I Determine the data usage across a Virtuoso instance?
- 1.5.75. How to discover the capabilities of a SPARQL endpoint to enhancing SPARQL-FED usage from Virtuoso instances?
- 1.5.76. How to split a urlencoded ";-" separated list of urls in a SPARQL query?
- 1.5.77. How to Update Large SPARQL Data avoiding due to database checkpoint abortion?
- 1.5.78. How to Manage SSL Protocols and Ciphers used with Virtuoso?