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Virtuoso Frequently Asked Questions (FAQ) Page. This page includes questions and answers related to functionality across the following Virtuoso Modules: Multi-Model Database Management (Single-Server & Cluster Editions) Web HTTP Server and Linked Data Deployment Native and Virtual Knowledge Graph Deployment SQL and SPARQL Query Language Support Data Virtualization Data Federation Cloud Deployment

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description	Virtuoso Frequently Asked Questions (FAQ) Page. This page includes questions and answers related to functionality across the following Virtuoso Modules: <ul> <li>Multi-Model Database Management (Single-Server & Cluster Editions)</li> <li>Web HTTP Server and Linked Data Deployment</li> <li>Native and Virtual Knowledge Graph Deployment</li> <li>SQL and SPARQL Query Language Support</li> <li>Data Virtualization</li> <li>Data Federation</li> <li>Cloud Deployment</li> </ul> Collection of Questions and Answers addressing all aspects of the Virtuoso Multi-Model DBMS & Data Integration Platform Virtuoso Frequently Asked Questions (FAQ) Page. This page includes questions and answers related to functionality across the following Virtuoso Modules: <ul> <li>Multi-Model Database Management (Single-Server & Cluster Editions)</li> <li>Web HTTP Server and Linked Data Deployment</li> <li>Native and Virtual Knowledge Graph Deployment</li> <li>SQL and SPARQL Query Language Support</li> <li>Data Virtualization</li> <li>Data Federation</li> <li>Cloud Deployment</li> </ul>
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title	OpenLink Virtuoso Universal Server Frequently Asked Questions (FAQ) Page Virtuoso Frequently Asked Questions & Answers Page Virtuoso Pricing and Frequently Asked Questions & Answers Page
relatedLink	Universal Data Access (UDA) Drivers Web Page Virtuoso Home Page OpenLink Software Web Home Page
title	Virtuoso Frequently Asked Questions & Answers Page
about	Answer to question: What is the differences in terms of performance/scalability between 2 cluster configurations? What is the differences in terms of performance/scalability between 2 cluster configurations? Answer to question: Is Virtuoso currently evaluating NoSQL database for the storage of quads? Answer to question: What is the current status of development for Virtuoso federation of triple stores? Answer to question: When will federation of triple stores be available in Virtuoso and how does it compare to clustering? Answer to question: What are the best options for High-Avaliability and Disaster Recovery? Is it possible to move data from one datacenter to another and how is data transferred? Are there any numbers about the speed of data replication between two datacenters and consistency of the process? Answer to question: Do I have to stop the cluster to add a node or partition an index? Answer to question: Are there any Virtuoso plans for Cloud technologies (Openstack, etc.)? Answer to question: What is the Virtuoso strategy to scale? Is it possible to start small and then add servers if needed? Answer to question: How do I create RDF-based Linked Data Views over Relational Data Sources? Answer to question: How do I use Virtuoso to deploy Linked Data to the Web? Answer to question: How do I install and configure the Virtuoso Faceted Browser? Answer to question: How do I attach the Virtuoso Virtual Database Engine to ODBC- or JDBC-accessible Data Sources? Answer to question: What is R2RML? Answer to question: How do I use just one click on Virtuoso's HTML-based Wizard to Generate and Deploy RDF-based Linked Data from Relational Databases? Answer to question: How do I use SPARQL to dynamically generate CXML collections for the Microsoft or HTML5-based PivotViewer? Answer to question: How do I explore Linked Data using the HTML5-based Pivot Viewer? Answer to question: How do I explore Linked Data using the Microsoft Pivot Viewer? Is Virtuoso currently evaluating NoSQL database for the storage of quads? What is the current status of development for Virtuoso federation of triple stores? When will federation of triple stores be available in Virtuoso and how does it compare to clustering? What are the best options for High-Avaliability and Disaster Recovery? Is it possible to move data from one datacenter to another and how is data transferred? Are there any numbers about the speed of data replication between two datacenters and consistency of the process? Do I have to stop the cluster to add a node or partition an index? Are there any Virtuoso plans for Cloud technologies (Openstack, etc.)? What is the Virtuoso strategy to scale? Is it possible to start small and then add servers if needed? How do I create RDF-based Linked Data Views over Relational Data Sources? How do I use Virtuoso to deploy Linked Data to the Web? How do I install and configure the Virtuoso Faceted Browser? How do I attach the Virtuoso Virtual Database Engine to ODBC- or JDBC-accessible Data Sources? How do I use just one click on Virtuoso's HTML-based Wizard to Generate and Deploy RDF-based Linked Data from Relational Databases? How do I use SPARQL to dynamically generate CXML collections for the Microsoft or HTML5-based PivotViewer? How do I explore Linked Data using the HTML5-based Pivot Viewer? How do I explore Linked Data using the Microsoft Pivot Viewer? Answer to question: Is database interaction possible through an API? Is database interaction possible through an API? Answer to question: Does your platform feature an audit trail? If so, what type and level of events are captured? Does your platform feature an audit trail? If so, what type and level of events are captured? Answer to question: Is it possible to run the RDF extraction process in a more automated fashion? (i.e. via API or similar rather than via the interface) Is it possible to run the RDF extraction process in a more automated fashion? (i.e. via API or similar rather than via the interface) Answer to question: What cloud technology / provider is/are your solution(s) hosted on? What cloud technology / provider is/are your solution(s) hosted on? Answer to question: Concurrent usage - how many user can be supported by the current platform Concurrent usage - how many user can be supported by the current platform Answer to question: Does Virtuoso support Conventional SQL Data Virtualization ? Does Virtuoso support Conventional SQL Data Virtualization ? Answer to question: How can I copy multiple folders from a HTTP Server over to a Github repo? How can I copy multiple folders from a HTTP Server over to a Github repo? Answer to question: How can I create SHA-128 hashes? How can I create SHA-128 hashes? Answer to question: How can I create SHA-256 hashes? How can I create SHA-256 hashes? Answer to question: Does Virtuoso Support Data Paging for external RESTful API data? Does Virtuoso Support Data Paging for external RESTful API data? Answer to question: In what way can logical data segregation (‘Chinese Walls’) be achieved between different end user groups? In what way can logical data segregation (‘Chinese Walls’) be achieved between different end user groups? Answer to question: Data Size - how much memory would be required for hosting dataset Data Size - how much memory would be required for hosting dataset Answer to question: Which of the following landing zones are supported? - SaaS - PaaS - IaaS - On-premise Which of the following landing zones are supported? - SaaS - PaaS - IaaS - On-premise Answer to question: How do I determine if there are invalid IRIs in my Virtuoso DBMS? How do I determine if there are invalid IRIs in my Virtuoso DBMS? Answer to question: Do you have a specific preconfigured service for OpenShift? Do you have a specific preconfigured service for OpenShift? Answer to question: Does Virtuoso support ABAC integrated into existing Identity Access Management (IAM) setup (e.g., LDAP via WebIDTLS+Delegation) Does Virtuoso support ABAC integrated into existing Identity Access Management (IAM) setup (e.g., LDAP via WebIDTLS+Delegation) Answer to question: Can an HTTP Rest Endpoint be transformed to an External Table? Can an HTTP Rest Endpoint be transformed to an External Table? Answer to question: How to execute HTTP and HTTPS requests via Proxy server How to execute HTTP and HTTPS requests via Proxy server Answer to question: How does Virtuoso handle change-sensitivity for integrated APIs? How does Virtuoso handle change-sensitivity for integrated APIs? Answer to question: How do I use Virtuoso’s Replication Functionality to configure for High Availability that isn’t dependent on a single publisher? How do I use Virtuoso’s Replication Functionality to configure for High Availability that isn’t dependent on a single publisher? Answer to question: Could you provide a general overview of your platform’s Identity & Access Management (IAM) framework? This includes the User Admin GUI, application roles, permissions, reports, API (for provisioning and reporting) etc. Could you provide a general overview of your platform’s Identity & Access Management (IAM) framework? This includes the User Admin GUI, application roles, permissions, reports, API (for provisioning and reporting) etc. Answer to question: Is there any functionality to infer links/concepts beyond the schema definition? (For example, given a column populated by only values ‘M’ and ‘F’, could we infer concepts of ‘Gender’ and Male/Female? Is there any ability to identify concepts that may be identical?) Is there any functionality to infer links/concepts beyond the schema definition? (For example, given a column populated by only values ‘M’ and ‘F’, could we infer concepts of ‘Gender’ and Male/Female? Is there any ability to identify concepts that may be identical?) Answer to question: Do you need an ontology for direct mapping from JSON to RDF? Do you need an ontology for direct mapping from JSON to RDF? Answer to question: Virtuoso SPARQL Query reponse time increases as Named Graphs size increases Virtuoso SPARQL Query reponse time increases as Named Graphs size increases Answer to question: How can I manually replace the Virtuoso server binary? How can I manually replace the Virtuoso server binary?

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