Opening Local Files The Analyst Application supports many different file formats, including SAS data sets, Excel spreadsheets, Lotus spreadsheets, SPSS portable files, and delimited files. You can ...

How to Open Multiple CSV Files in One Excel Spreadsheet. The CSV file extension appears on text documents that contain comma-separated values. Like spreadsheet data, each line in a CSV file ...

If the DAT file is a video, you can open it with its associated video app. However, if you aren't sure what app it's intended for, VLC Media Player should be able to open it as well.