The status of the database: online or offline. Comma-separated list of names of RDF extractors to use when processing documents when no RDF extractor names are given. Comma-separated list of names of text extractors to use when processing documents when no text extractor names are given. The directory where OpenNLP models are located. See Entity Extraction and Linking for details. The path under which documents will be stored. A relative path is relative to the database directory. S3 storage should specify an absolute path with the bucket name as the first part of the path.
Protocol used when storing on S3 and compatible stores. Specifies which part of the database, in terms of named graphs, is checked with IC validation. Set to tag:stardog:api:context:all to validate all the named graphs in the database; otherwise, the legal value of icv. Determines whether ICV is active for the database; if true, all database mutations are subject to IC validation i. Enables optimized index support for named graphs; speeds SPARQL query evaluation with named graphs at the cost of some overhead for database loading and index maintenance. Minimum number of triples that should be in the database for statistics to be updated automatically.
Ratio of updated triples to the number of triples in the database that triggers the automatic statistics computation in a background thread. This option has no effect if index. Similar to index. Determines how the Stardog parser handles bnode identifiers that may be present in RDF input. If this property is enabled i. Determines what data the database evaluates queries against; if true , it will query over the default graph and the union of all named graphs; if false the default , it will query only over the default graph.
This database option overrides any global server settings.
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Determines how property paths interact with named graphs in the data. Option for configuring how Stardog will reuse query plans. Stardog answers queries by first generating an execution plan.
Generating an optimal query plan is hard and time-consuming so these plans are cached and reused for structurally equivalent queries; i. This option determines the conditions under which a cached plan will be reused. See QueryPlanReuse for the available values.
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Determines which, if any, named graph or graphs contains the "TBox", i. The legal value is a comma-separated list of named graph identifiers, including optionally the special names, tag:stardog:api:context:default and tag:stardog:api:context:all , which represent the default graph and the union of all named graphs and the default graph, respectively. Enables approximate reasoning. With this flag enabled Stardog will approximate an axiom that is outside the profile Stardog supports and normally ignored. For example, an equivalent class axiom might be split into two subclass axioms and only one subclass axiom is used.
Option to enable owl:sameAs reasoning. When this option is set to ON reflexive, symmetric, and transitive closure of the owl:sameAs triples in the database is computed. When it is set to FULL , owl:sameAs inferences are computed based on the schema axioms such as functional properties.
Specify the default limit on the number of results returned from a full-text search -1 returns all results. If false , literals added during a transaction are not automatically indexed; users need to optimize the database in order to make them available for search. Specify the default limit on the number of results returned from a geospatial query -1 returns all results. Specifies the precision used for the indexing of geospatial data. The smaller the value, the less precision.
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Controls whether Stardog parses RDF strictly true , the default or loosely false. Enables logged transactions. Logged transactions are activated by default in Cluster mode.
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When transaction. Default is MB. Default is true. Determines what data the database evaluates queries against; if true , it will query over the default graph and the union of all accessible virtual graphs; if false the default , it will query only over the default graph. Requires query. A database must be set to offline status before most configuration parameters may be changed. Hence, the normal routine is to set the database offline, change the parameters, and then set the database to online.
All of these operations may be done programmatically from CLI tools, such that they can be scripted in advance to minimize downtime. In a future version, we will allow some properties to be set while the database remains online.
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Databases are either online or offline; this allows database maintenance to be decoupled from server maintenance. Databases are put online or offline synchronously: these operations block until other database activity is completed or terminated. See stardog-admin help db for details.
If Stardog Server is shutdown while a database is offline, the database will be offline when the server restarts. See the section below about loading compressed data. All data files, indexes, and server metadata for the new database will be stored in Stardog Home. Minimally, the only thing you must know to create a Stardog database is a database name ; alternately, you may customize some other database parameters and options depending on anticipated workloads, data modeling, and other factors.
Stardog database archetypes are a new feature in 2. A database archetype is a named, vendor-defined or user-defined bundle of data and functionality to be applied at database-creation time. Archetypes are primarily for supporting data standards or tool chain configurations in a simple way.
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The last point to make is that archetypes are composable: you can mix-and-match them at database creation time as needed. Archetypes are composable, so you can use more of them and they are intended to be used alongside your domain data , which may include as many other schemas, ontologies, etc. Please see the Stardog Examples repository on Github for an example that shows how to create your own Stardog archetype. As a boon to the overworked admin or devops peeps, Stardog Server supports database creation templates: you can pass a Java Properties file with config values set and with the values typically just the database name that are unique to a specific database passed in CLI parameters.
To create a new database with the default options by simply providing a name and a set of initial datasets to load:. Datasets can be loaded later as well. To create in this case, an empty database from a template file:. If you only want to change only a few configuration options you can directly give the values for these options in the CLI args as follows:.
allieradtke.com/3736-the-best-phone.php Flag to specify whether bulk loaded files should be first copied to the server. If the errors occur during executing admin commands, then the system DB may have been corrupted. System database corruptions can also cause other problems including authorization errors. This command needs exclusive access to your Stardog home directory and therefore requires the Stardog Server not to be running.
This also means that the command can only be run on the machine where the Stardog home directory is located, and you will not be able to start the Stardog Server while this command is running. If the built-in Stardog system database is corrupted, then you can use the database name system as the repair argument. To repair the database myDB:. Stardog includes both physical and logical backup utilities; logical backups are accomplished using the export CLI command. Physical backups and restores are accomplished using stardog-admin db backup and stardog-admin db restore commands, respectively. These tools perform physical backups, including database metadata, rather than logical backups via some RDF serialization.
They are native Stardog backups and can only be restored with Stardog tools. Backup may be accomplished while a database is online; backup is performed in a read transaction: reads and writes may continue, but writes performed during the backup are not reflected in the backup. See the man pages for backup and restore for details.
You can use a variety of OS-specific options to do remote backups over some network or data protocol; those options are left as an exercise for the admin. To perform a remote backup, for example, pass in a specific directory that may be mounted in the current OS namespace via some network protocol, thus:. The endpoint hostname and endpoint port values are only used for on-premises S3 clones. A default S3 backup location can also be specified in the stardog. To restore a Stardog database from a Stardog backup volume, simply pass a fully-qualified path to the volume in question.
The location of the backup should be the full path to the backup, not the location of the backup directory as specified in your Stardog configuration. There is no need to specify the name of the database to restore. Stardog can be configured to automatically restore databases from a backup location on startup. For example, when a Stardog cluster node first starts it could pull all of the database data down from an S3 backup before joining the cluster. A regular expression that matches the names of the databases to automatically restore on startup, eg:.
A boolean value that determines if all databases which failed to load should be automatically restored from a backup location. The backup system cannot directly backup databases created in versions before 2. These databases must be explicitly migrated to use the new backup system; this is a one-time operation per database and is accomplished by running.