>And is that true that th eworst thing is that I edit th esame record of the same table at the same time ?
Yes, this is about the worst thing, and it is usually acceptable. What happens here is: 1) User 1 starts editing, 2) User 2 starts editing, 3) User 1 tries to save record (TableUpdate()), and succeeds. 4) User 2 tries to save record (TableUpdate()), and fails. 5) User 2 curses, presses the "Undo" button (TableRevert(); this will undo changes, but it will also load the most recent data), and starts editing again.
This scenario is also quite improbable under most real-world circumstances.
HTH, Hilmar.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)