DELETE doesn't work

I'm writing an application that uses dBase III tables, because I have to use data stored with applications that produced this kind of files. I can use JdbcOdbcDriver and it works. I can perform the basic SQL instructions SELECT, INSERT and UPDATE. But DELETE doesn't work. When a DELETE operation is performed, the rows I tried to delete remain in the table, although the stmt.executeUpdate() method returns the actual number of rows fulfilling the WHERE condition.
I remember that in dBase III files, deleting rows is performed in two steps: first, rows are marked for deletion, and afterwards, a "pack" operation must be performed in order to remove the rows from the file. Does anybody know if this has any relation with my problem? Anybody can give me a hint?
Thanks a lot in advance.

I have not used dBase III files in a long time and have never used them with JDBC.
When you delete a row - the row is marked for deletion. An internal delete flag is set, in the record deleted. There is a command "SET DELETED ON", if it is set, as far as dBase is concerned the record is deleted even though the record still exists in the database. If the command "SET DELETED OFF" is used the deleted records can be seen and recovered at any point until a pack is done. If I remember correctly
you can test if a record has the delete flag on with the function "DELETED()", if true the record is is marked for deletion.
Normally you have "SET DELETED ON" and do everything as you would with any other database.
The pack function only needs to be run when it becomes necesary to recover the space the deleted records are taking up. This is nornally done only when the number of deleted records becomes significant. Also it can only be performed with exclusive use of the file. Normally the pack is done on weekends or in the middle of the night.
If all else is working in your application, suspect the records are being marked as deleted but you have not SET DELETED ON and you are still seeing the records. Note it is possible to see the flag at the start of the record.
rykk

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