>We all know that data security on the native foxpro table is not supported by the system. But aside from using other back-end systems
>(SQL-Server,Oracle) , is there any other way or technique wherein we can hide the tables to prevent users from opening the tables using other software applications (eg Excel).

Not really - fi the table can be read, then anything can read it. You can try using low-level file manipulation to make it appear not to be a .DBF, but then you have to make that change whenever you open and close the table explicitly, which cna be diffil=cult to plan for, or you can use a data encryption solution like Cryptor, but again, must incorporate this into code.

IAC, a DBF can't be protected against being copied; if it can be opened for reading, it can be copied.