Could you point an overall (basic) guideline on how to implement an App (Android/ Ios - maybe IONIC ) that must to persist data at an AWS NoSQL database (MongoDB) ?

Hi,
Can you build a REST API in front of the NoSQL database?

Hi

Yes, something we have done, yet.

In the meanwhile we made an REST API to receive MongoDB data and then inserts it on a MSSQLServer table, making a syncronization, the specific purpose of this table is just to promote the syncronism between MongoDB (at AWS) and MSSQLServer.

This table has a trigger that inserts/ updates data at a set of  MSSQLServer tables.

Another company develops the app, with IONIC (iOS and Android) that obtains the data to input at MogoDB.

Hi,
Ok, then, can you be more specific with your problem?

My question asks for an in general overall - an architecture view.

Since we had started our job, as the time passed,  more specific problems will demand another questions.

Hi,
Let's start with the data: what's the use case behind all this data movement? Why MongoDB and SQL Server?

Because there are 02 different aspects, the first deals with SQLServer and another MongoDB that runs at Apps. The 02 databases must to be syncronized.

At least he tried something!