Are External Data Sources Read-Only?

I’ve been able to connect Salesforce to an External Data Source, but it appears I can only read external data. Is it possible to connect Salesforce using the External Data Source feature with full read and write capabilities?


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Method 1

For now, yes, they are read only (see the release notes). Salesforce has said that the plan is to eventually make them writable (safe harbor applies, etc), but they are read only for now

Method 2

Since Winter 16, External Objects are writeable.
Refer to these release notes

All methods was sourced from or, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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