I connected the database in protege through Ontop Plugin and created Mapping from Ontop Mappings / Mapping Manager
Now I am creating a graph using that mapping from Ontop Mapping but I m not able to use database table values.
However, I created a database relation mapping graph through OWLViz.
OWLViz
I want to create a graph using table data using multiple inner join queries, but I don't know how to use ontop mapping for the same
SPARQL Query
Have to try to connect your DB with the Ontop plugin in protege?
You have to set Ontop Mapping IDs for creating a graph using SPARQL Query.
Related
I am using Spring Data JPA in project. I have 2 tables in database, and I need to create new object using some data from first table and some data from second one. Anyone have any idea? I can't use #Query in repository because I don't have any entities in code, I have only access to db.
Actually I am dealing with a large volume of data in a Symfony 2.8 application and I want to make use of temporary views and tables to cross and query multiple tables with large data. So I am thinking of dynamically creating views, processing these data in the database, querying these views and temporary tables. But symfony generates the error
[Semantical Error] Error: Class not defined.
How to make use of (create and query) temporary tables or views in doctrine / sql?
Is there way to generate mysql schema from Yii model? In model i describe fields and relations. So it is enough to generate/update db structure.
Like symfony 2 command line:
php console/app doctrine:schema:update
No, in yii a models attributes are dynamic and come from the database. Any properties defined in the model are not attributes and therefore not in the database. For this reason if you add a new column to the post table the Post model will automatically have a magic property of that column.
What I think you're after are Migrations
is there any way to update my sql 2008 db from model?
i maped model from db, and added some changes like associations and change fields name in some tables, can i update now db using my model?
Over by the solution explorer there is a model tree view. In there right click the model and there should be generate database from model.
I'm using Fluent NHibernate (and I'm a newbie). I have mapped a read-only table that already exists in the database (it's actually a view in the db). In addition, I have mapped new classes for which I want to create tables using SchemaExport.Create().
In my fluent mapping, I have specified "ReadOnly()" to mark the view as immutable. However, when I execute SchemaExport.Create(), it still tries to create the table so I get the error "There is already an object named 'vw_Existing'".
Is there a way to prevent NHibernate from trying to create that specific table?
I supposed I could export and modify the sql (SetOutputFile), but it would be nice to use SchemaExport.Create().
Thanks.
You're looking for
SchemaAction.None();