Maybe. What is a DAT extension The name itself doesn't tell you anything other than it seems to be a data file, right
What is the program or database used to create it
Do you have a data layout (a structure layout) to explain the data format contained therein
There are no automated tools for this job.
If you have a layout you could conceivably write a small routine to import the data.
Could be a text file (SDF) or maybe a comma-delimited (CSV) file or maybe has some binay and you could use low level functions (e.g. FREAD(), etc.) to import and convert the data.
Unfortunately that's all I can say based on the limited data available.