I have a file >>
file name: "xyz.ddb"
size: 464,292 KB

How can i open this data file?

i tried to import it into access and excel!
access, i couldn't
excel, i got junk letters!

please help
thanks

Unless you know where the data file came from, it will take a lot of work to try to decode the data/file format. (And, maybe even of you DO know what program generated it!)

its a yellow pages data file that came from the telecommunication company here in my country. do you think i can decode it?

That's hard to say. Without a published spec of some sort, you're going to have to invest some time in understanding what's inside the file, and how it's structured...

First, try opening it with a hex editor, to see what jumps out at you. If it's a 'database' type of file, you might find either a regular structure of some sort. (maybe fixed length data... maybe data separated by a delimiter.

Once (and if) you can define the file structure, you'll need to write an application that can read the file, and write the data into a database. But, first things first. Before you can read it, you need to know what you're reading.