Tysons-based Logi Analytics Inc. is purchasing Reston-based business intelligence and data visualization startup Zoomdata Inc., according to an announcement by both companies on Monday. The terms of the deal were not disclosed. This marks the second acquisition so far this year for Logi, a data analytics platform founded in 2000. Logi announced it was purchasing another local firm in Rockville-based visualization and reporting company Jinfonet Software in February. "The nature of data is changing,"...