madata

madata syncs the metadata of datasets between MADATA (Mannheim Data Repository) and Wikidata. It provides access to the MADATA metadata records directly in Python.

Table of contents

• Installation
• Initialization
• Syncing
• SPARQL queries

Installation

pip install madata

or

git clone https://github.com/UB-Mannheim/madata
cd madata/
pip install .

Initialization

By initialization madata harvests the MADATA OAI-PMH interface, stores the Dublin Core metadata records in records.OAI_DC and queries the Wikidata SPARQL endpoint for the list of metadata records published at MADATA. Example:

from madata import Metadata
records = Metadata()
print(records)
[('OAI', 'https://madata.bib.uni-mannheim.de/cgi/oai2'),
 ('MADATA records from OAI-PMH', 163),
 ('MADATA records at Wikidata', 1),
 ('In sync?', False)]

Every record rec in the the list records.OAI_DChas the following attributes: rec.metadata (structured metadata record), rec.header (structured header for a metadata record) and rec.raw (raw DC metadata record). The raw header is available via rec.header.raw. Additionally, a pandas-dataframe with metadata records is stored in records.OAI_DC_df.

Syncing

In order to upload the MADATA metadata records to Wikidata, you need an account at Wikidata. If you have an account, use

from madata import Metadata
records = Metadata()
records._sync()
>>> Wikidata username: 
>>> Wikidata password: 

Type your username and password, then madata starts to sync the metadata records at MADATA and Wikidata.

SPARQL queries

The MADATA-subset at Wikidata: https://w.wiki/6s7R.