Naveen Rao, the head of artificial intelligence at the $100 billion startup Databricks Inc., is planning to leave his position to launch a new venture making a novel type of computer, according to a person familiar with the matter. A spokesperson for Databricks confirmed that Rao is transitioning to an advisory role at the company, and said that Databricks is planning to invest in his new startup. The spokesperson declined to disclose the size of the investment....