OWLIM-SE Administrative Tasks

compared with
Current by barry.bishop
on Nov 04, 2011 08:58.

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Ontologies and schemas imported at initialisation time using the 'imports' configuration parameter are flagged as read-only. This is the preferred method for using ontologies/schemas as it allows the incremental delete algorithm to be very efficient. However, there are times when it is necessary to change a schema and this can be done inside a 'system transaction'.
The user instructs OWLIM that the transaction is a system transaction by including a dummy statement with the special schema-transaction predicate, i.e.
{{_:b1 <http://www.ontotext.com/owlim/system#schemaTransaction> ""}}
{noformat}
_:b1 <http://www.ontotext.com/owlim/system#schemaTransaction> ""
{noformat}
This statement is not inserted in to the database, rather it serves as a flag that tells OWLIM that it can ignore the read-only flag for imported statements.