Database and expert systems applications DEXA 2023 workshops : 34th international conference DEXA 2023 Penang Malaysia August 28 30 2023 : proceedings This volume constitutes the refereed proceedings of the workshops held at the 34th International Conference on Database and Expert Systems Applications DEXA 2023 held in Penang Malaysia in August 2023: The 7th International Workshop on Cyber Security and Functional Safety in Cyber Physical Systems IWCFS 2023 and The 3rd International Workshop on AI System Engineering: Math Modelling and Software AISys2023. The 7 full papers and 3 short papers were thoroughly reviewed and selected from 20 submissions and discuss a range of topics including: knowledge discovery biological data cyber security cyber physical system machine learning knowledge graphs information retriever data base and artificial intelligence