Still today the highest performance data manager available. Ha! the Obamacare exchanges should have used this facility. Date entry databases with the Virtual Storage option, provide a Boolean logic data manipulation capability to applications accessing the data. This allows the data manager to provide data integrity at the same time as the highest concurrent access rate of any data manager to-date. Any one here ever use this facility? I designed it half a life time back now. Still going. Still no peers. https://www.ibm.com/support/knowledgecenter/SSEPH2_15.1.0/com.ibm.ims15.doc.dag/ims_fpdbtypes.htm