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⟩ Explain MDT?

MDT is a internal indicator.It is used when we are using

SFLNXTCHG in SFL.MDT indicator default in on mode.

breifly when we are using readc for read changed

records.MDT is internally on for every record .If retreive

the record once MDT is going to be off.for that purpose we

used SFLNXTCHG keyword to seton.

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