Pregunta de entrevista de Infosys

COBOL: Static vs. Dynamic Call, SEARCH vs. SEARCH ALL, COMP-3 usage, PERFORM types, debugging S0C7. JCL: JOBLIB vs. STEPLIB, GDG, COND vs. IF, restart steps. DB2: Deadlocks (-911), isolation levels, REORG vs. RUNSTATS, SQL performance tuning. IMS: GU vs. GN, PSB, Checkpoints.