>Hi,
>I am running a program that does the following:
> - Zap records in MyTable
> - Append records from a .TXT file
> - Delete certiain index tags
> - Replace certain field with new values
> - Recreate deleted index tags
> - Close MyTable
>
>At one point, I get this error - 1550, DBC Internal consistency error. I looked at the Microsoft website and they suggest that I use Validate Database command. I will try this.
>
>I would really appreciate it, if anyone could provide me more insight into this problem.

VALIDATE DATABASE RECOVER is a good place to start (after backing up the .DBC and related files). A .DBC is simply a table so you may PACK or REINDEX it.

One thing to be careful of is if you have relations set in the .DBC that involve the table whose index tags you are deleting. This will break those relations in the .DBC and might be the root cause of what you're seeing there. If that's the case you might need to drop, then rebuild relations using ALTER TABLE ... REFERENCES.