Place all of the ingredients for the dressing in a bowl and whisk together. Set aside in the refrigerator.Place the corn in a pot and cover with water. Lightly salt the water and bring to a boil. Once boiling, let cook for about 2 more minutes or until corn is easily pierced with a fork. Drain into a colander and shave the kernels off the corn with a knife and set aside.Slice the zucchinis halfway lengthwise, careful not to pierce the center. Spiralize, using Blade B and place in a bowl with the tomatoes, corn, beans, onion and basil. Pour over the dressing and toss to thoroughly combine.