Hi,
Assuming you have a way to identify the person uniquely, you can use the Join recipe using the identifier as join key: https://www.youtube.com/watch?v=p4kDCi2iXL8
For photos, you can store them in a Folder and store the path to the image in a Dataset.
If you are new to DSS, I suggest you get started with guided examples on: https://academy.dataiku.com/latest/
Cheers,
Alex