Method to Get list of Tables while creating model

In model, the text box to add table says ‘Search for table name’ and user directly starts writing the table name in it. But we can get the schema browser(List of schema and tables inside it) by clicking on the blue colored magnifying glass icon without writing anything in the text box. There should be some message or hint so that user can get to know about this.

Also, the box pointed in the image appears even before the user types in or clicks. It should appear when the user starts to type or click.