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How can I be sure the original legacy data is never compromised?

April 26, 2017compromised Data legacy original sure

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How can I be sure the original legacy data is never compromised?

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Host Data Connect is a “read-only” system, so databases cannot be updated or changed through Host Data Connect. In addition, Host Data Connect operates as a fully supported subsystem under OS/390, and as such complies with all mainframe security and data integrity rules and subsystems.