Dates have a very high sugar content relative to the rest of their nutritional value. People who are trying to manage their blood sugar, such as those with diabetes, should be mindful of their total sugar intake when consuming dates.
If you pour some olive oil on top of left over tomato paste or sauce, just enough to cover the surface and put it in the fridge it will stay fresh indefinitely. You don't have to go to the trouble of freezing it in ice cube trays.