I have made quite a comprehensive research about the topic but I still cannot determine the variety of the tomato that I grew and which is dead by now. But I have started a new one from its seeds so in order to determine its necessities, first of all one needs to determine the plant's variety. It is definitely a cherry tomato variety and since there are lots of cherry tomato varieties it is impossible for me to know. I have a list of cherry tomatoes if it will help: Cherry Tomato Varieties
I forgot to say that I bought this from IKEA as a plant, not as a seed and there was no variety name on the label. I am not even sure that this is a hybrid or heirloom. I hope it is the latter...