Existing semantic networks can be migrated using the SEM_APIS.MIGRATE_DATA_TO_STORAGE_V2 procedure. Unescaped storage form is the default in version 21c and later. The network storage form can be specified in the options parameter of the SEM_APIS.CREATE_SEM_NETWORK procedure at network creation time. This unescaped storage form reduces storage costs and increases query performance. Starting with version 21c, values stored in the RDF_VALUE$ table can be stored using an unescaped storage form that is, Unicode characters and special characters are stored as a single character instead of being stored as an ASCII escape sequence (such as the single character 'ñ' instead of the ASCII escape sequence '\u00F1'). The usage notes for the options parameter for SEM_APIS.CREATE_ENTAILMENT, specifically for the MODEL_PARTITIONS=n option.Īn RDF_VALUE$ table is used to store a mapping of RDF values to internal numeric identifiers. The options parameter descriptions for SEM_APIS.CREATE_SEM_MODEL and SEM_APIS.CREATE_SEM_NETWORK For more information about how to enable composite partitioning, see: Composite partitioning can improve SPARQL query performance on larger data sets through better parallelization and improved query optimizer statistics. The RDF_LINK$ table can optionally use list-hash composite partitioning where each model partition is subpartitioned by a hash of the predicate. By default, the RDF_LINK$ table is list-partitioned into a set of Semantic Models, which are user-created containers for storing RDF triples or quads. Must explicitly call SEM_APIS.CREATE_SEM_NETWORK toĬreate a semantic network before any RDF data can be stored in the database.Ī semantic network contains, among other things, an RDF_LINK$ table for storing RDF triples or quads. A semantic network is not created during installation. (However, null values and null strings are not supported.)Ī semantic network is a set of tables and views that holds RDF data (that is, The following requirements apply to the specifications of URIs and the storage of semantic data in the database:Īn object can be any type, such as a URI, a blank node, or a literal. The possible node types are blank nodes, URIs, plain literals, and typed literals. As a result, a single document containing multiple triples results in multiple database objects.Īll the subjects and objects of triples are mapped to nodes in a semantic data network, and properties are mapped to network links that have their start node and end node as subject and object, respectively. RDF and OWL, such as is treated as one database object. This chapter assumes that you are familiar with the major concepts associated with Each network contains semantic data (also referred to as RDF data). The RDF Graph feature enables you to create one or more semantic networks in an Oracle database. These capabilities are referred to as the RDF Graph feature of Oracle Graph. cert = stunnel.Oracle Graph support for semantic technologies consists mainly of Resource Description Framework (RDF) and a subset of the Web Ontology Language (OWL). Here is a redacted version of the relevant part of my config file located here: C:\Program Files (x86)\stunnel\config\nf TLS front-end to a web server Then try accessing and confirm you get the Blue Iris login. Install it as a service, edit the config file to tunnel 443 to whatever port the Blue Iris server is running on (port 80 in my case), and restart the service.
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