what is a tensor? sounds like a sql with metadata? "What is it the tensor in TensorFlow? Tensorflow’s name is directly derived from its core framework: Tensor. In Tensorflow, all the computations involve tensors. A tensor is a vector or matrix of n-dimensions that represents all types of data. All values in a tensor hold identical data type with a known (or partially known) shape. What is a tensor in TensorFlow? - Quora