Hi all,

I'm Adrian Bielefeldt an writing on behalf of Research:Understanding Wikidata Queries, a research project aimed at gaining an insight into the way the query service of wikidata is being used. We have some questions and are wondering if any of you could provide us with an answer.

1. Is there a unique key for the query log? The log I am refering to is the wdqs_extract table from the hive database wmf. We would like to be able to permanently link our own computed data with the log entry we computed it from.

2. Is it possible to find out if a query in a given log entry was accepted by the sparql endpoint as valid?

3. Is there any other database system besides hive installed on the server?

And finally a question on conventions for this mailing list: Am I correct in sending one mail for multiple questions or should I send separate mails for each question?

Greetings,

Adrian Bielefeldt