IBM MVS Question: What is PDES? IBM MVS Interview QuestionAnswer: PDS can extend 15 time after it is allocated. PDSE can extend 122 times. Previous QuestionNext QuestionWHAT IS DIFFEENCE BETWEEN PDS AND PDES?STEPS BEFORE MERGING?DUMMY DATASET USES?DIFFERENCES BETWEEN IDCAMS AND ICETOOLS?DIFFERENCE BETWEEN ALL JCL UTILITY TOOLS?What is the size of the address space in KBs for 16 bit address space?