How to connect an external database to AppEngine?

Is there a way (better than using UrlFetch ) to connect to any external database from AppEngine?

I already know the hosted SQL databases in App Engine for Business , but they are not free and will be available in the second quarter of 2011, so now is not an option.

I really like the data warehouse, but customers do not like the lock of the provider or have other reasons.

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The only way to connect external databases to AppEngine is to expose them through the web API.
Basically, you need to create a webservices layer on your database, allowing your GAE application to interact with remote db via UrlFetch Http calls.

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Source: https://habr.com/ru/post/1336539/


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