Real-time database transactions show greatly different from traditional database transactions.The differences are mainly displayed in aspects of complex structures,timing property,dependencies and correctness of transactions.This paper first analyzes the application properties and the requirements of real-time database transactions,and presents a uniform framework of various complex transaction structures, and then discusses with emphasis on a variety of dependencies between real-time transactions:structural dependency,data dependency,behavior and temporal dependency,as well as real time transaction correctness in result,behavior,structure and temporal behavior.