mapinfo - How is object created as line using createline stored in .tab file?

I used Mapbasic and made data imported from excel into mappable and added projection to WGS 84 and updated table using:

update TABLE set obj = createline(x1,y1,x2,y2)

to create line and the line was create which I could see in mapper window but when I looked at the browser window the no of column has not changed. How is this obj created stored in table in .tab file as I can see spatial coordinate in MS SQL table.

Answer

MapInfo will not let you see the spatial data in the browser, it is only visible in the map. MapInfo stores the spatial data (your lines) in the map file and the alphanumerical data in the .DAT (.TXT, .XLS or whatever format you are using).

If you need to see some parts of the spatial data inside MI Pro, you need to query these parts using SQL Select.