Mirror tables in different databases

giuseppe You can do this via the API tools provided in the documentation

You can set up trigger on creation of record to create a record in the mirrored table, and have trigger on update within your fields to send over the information to the other record in the mirrored table

let data := {
            fields: {
                'field': 'record data',
            }
        };
    let response := http("POST", "https://{NinoxURL}/v1/teams/{teamID}/databases/{databaseID}/tables/{tableID}/records/", {
            Authorization: "Bearer " + {APIkey},
            'Content-Type': "application/json"
        }, data);
    alert(response.result);

Here is a stripped back example of mine, anything in curly brackets must be set as what your databases value should be, for example your databaseID can be found in your url or by using the formula 'databaseId()'

you can have as many fields as you want being sent across, they are sent as a JSON object, ie

fields: {
     data1: data,
     data2: data2,
     data3: data3
}

In my experience, when I do this I send over the new record ID, so then they effectively have a link, and I created a function to utilise the API in querying another database to find that record, for when doing updates on individual fields 

function putDatabase(teamID : text,databaseId : text,tableID : text,recordId : text,query : any,key : text) do
    let url := "https://{your url}/v1/teams/" + teamID + "/databases/" + databaseId +
        "/tables/" +
        tableID +
        "/records/" +
        recordId;
    let headers := {
            Authorization: "Bearer " + {your api key},
            'Content-Type': "application/json"
        };
    let data := {
            fields: query
        };
    let response := http("PUT", url, headers, data);
    void
end;

I use this function with this format

putDatabase("TeamID", "DatabaseID", "TableID", "recordID", {
            'Item Name': t.'Item Name'
        }, key)

I'm happy to provide any more information to try and help you with this further