You can import CSV easily.

HCL Notes/Domino 8.5 Forum (includes Notes Traveler)

Subject:

Using a COL file.

More details here:

http://publib.boulder.ibm.com/infocenter/domhelp/v8r0/topic/com.ibm.designer.domino.main.doc/H_ABOUT_WRITING_A_COL_FILE_FOR_A_TABULAR_TEXT_FILE.html

But as an example.

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Simon O'Doherty, 555-12345, 1 Main Street
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Your COL file might look like:

FirstName: UNTIL " ";
LastName: UNTIL ",";
PhoneNumber: UNTIL ",";
AddressLine1: UNTIL "";

After you have your COL File created, you just do a "file->Import", then select Tabular Text and your CSV file. After that select your COL file.
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Other then this you can also write LotusScript or Java to read the file and import.

For things like Excel you can use VBA and COM to transfer the data to a Notes Database.

Feedback response number WEBB9H4AQB created by ~Joseph Fezlulitynds on 03/11/2014