Deleting a line in a Database Collection

Can anyone advise how to do this please? Tried clicking on it to highlight and then delete but nothing happens. No idea how but I began creating my database at No 1 (A-Z), saved the list and when it came back into view, the order had been changed to Z-A and line no 1 is now empty. Thanks.

Sorting in the database app does not affect your web site, you have to set sorting in a dataset or query to make it sort in your web site. If you select a row in Sandbox or Live and right click and choose delete the row should be deleted. But remember there are two versions, live and sandbox.

Thanks Andreas.

I do not have a right click option on my computer. I have tried with different browsers. can someone help please?