Updating items in a grid with checkbox - ionic 2

I hope you can help me. I have a grid with many columns and I need to update in my database the selected rows pressing a button. I can't find any info about this.

This is my code.

<ion-row *ngFor="let errors of eta_allErrorsRS">
          <ion-col class="info-col col-align" col-1>
            ETA
          </ion-col>
          <ion-col class="info-col" col-1>
            <ion-checkbox ng-model="active"></ion-checkbox>
          </ion-col>
          <ion-col class="info-col col-align" col-1>
            SLI
          </ion-col>
          <ion-col class="info-col col-align" col-1>
            ODBMS
          </ion-col>
          <ion-col class="info-col col-align" col-1>
            
          </ion-col>
          <ion-col class="info-col col-align" col-2>
             + "/" + 
          </ion-col>
          <ion-col class="info-col col-align" col-4>
            
          </ion-col>
          <ion-col class="info-col col-align" col-1>
            
          </ion-col>
        </ion-row>
        <ion-row>
          <ion-col class="info-col col-footer" col-12>
            <button ion-button class="button-footer" smerrors color="bluedark" (click)="republishConfirm()">Republish</button>
            <button ion-button class="button-footer" smerrors color="bluedark" (click)="RejectConfirm()">Reject</button>
          </ion-col>
        </ion-row>

Thanks!!