Folders under 'Catalog' in Schema

Hi,

I see two folders called 'View' and 'Column View' under the Catalog in a schema.

1) I tried creating a column view using SQl and I see the column view under the 'Column View' folder. But I am not able to use this column view anywhere.

2) i tried creating a view by right-clicking on the 'View' folder, but I could only save it as a local .vsql file. What purpose do this serve?

Can someone shed some light here?

Thanks,

Benedict