rdb2rdf using rdflib but open() does not work

Asked Aug 30 '19 at 18:30

Active Aug 30 '19 at 18:30

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i am trying to convert relational db to rdf using rdflib , i tried code you can find it in this link https://pypi.org/project/rdb2rdf/ but does not work. i am using SQL server instead of PostgreSQL. after open() , i print length of graph and give me 0 !! can any one help

import rdflib as _rdf
import sqlalchemy as _sqla
db_str = 'postgresql://testuser:testpasswd@localhost/testdb'
db = _sqla.create_engine(db_str)
graph = _rdf.Graph()
graph.open(db)
print(graph.serialize(format='nt'))

asked Aug 30 '19 at 18:30

alaa seb

Does it give you an error? – Jessie Aug 30 '19 at 18:37
it does not give me any error @Jesse – alaa seb Aug 30 '19 at 18:42
`graph = _rdf.Graph('rdb2rdf_dm')` and something like `db_str = 'mssql://*server_name*/*database_name*?trusted_connection=yes'`. – Stanislav Kralin Aug 30 '19 at 20:23

rdb2rdf using rdflib but open() does not work

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