Side Car

Hi All,

I checked the forum, i havent got any crystal clear output.

My queries are as follows

1. what is SAP hana side car approach?

2. On what usecase SAP hana side car will work?

3. Can sap hana sidecar can connect to multiple ERP running on sql server, oracle?

4. what are tools to connect ? how it works

    Any relates sap notes for the same

Thanks