Taking some leaps here but AI/Machine Learning/Computer Vision - online index selection / query plan optimization. Computer Graphics - geo 3d indexes Numerics/

Taking some leaps here but AI/Machine Learning/Computer Vision - online index selection / query plan optimization. Computer Graphics - geo 3d indexes Numerics/Simulation - query plan optimization Robotics -if you go meta here there is a lot of overlap with distributed system coordination Bioinformatics - minimal except that this by definition requires uniquely rich data structures that need to be able to be accessed and stored in a database Computer Architecture - databases certainly are themselves architected to perform on computer architectures and the reverse is probably true Cryptography - databases often employ encryption and other security capabilities that are of critical importance but true this isn't the field you mention