CICS ⭐ Featured
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Q: How to do file BROWSE?

Answer:
BROWSE reads sequentially. EXEC CICS STARTBR FILE(name) RIDFLD(key). READNEXT/READPREV in loop. ENDBR ends browse. TOKEN for concurrent browses. Can use generic key to position.
VSAM
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Q: How to access AIX?

Answer:
Open PATH to AIX, not base cluster. READ via alternate key. Can browse by alternate key sequence. Updates depend on PATH UPDATE option. Non-unique AIX returns first, then READ NEXT for others.
VSAM
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Q: How to access VSAM via CICS?

Answer:
Define FILE in CICS FCT (File Control Table). Or RDO DEFINE FILE. EXEC CICS READ FILE. VSAM must be closed to batch when CICS owns. NSRV or LSR buffering. BROWSE for sequential.