COBOL ⭐ Featured
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Q: Explain SECTION vs PARAGRAPH

Answer:
SECTION groups related paragraphs, terminated by next SECTION or end of program. PARAGRAPH is a named block of code, terminated by next paragraph/section. PERFORM SECTION executes all paragraphs within. SECTION needed for segmentation, PARAGRAPH for simple procedures.
section paragraph structure
DB2 ⭐ Featured
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Q: What is tablespace?

Answer:
Tablespace is storage container for tables. CREATE TABLESPACE name IN database USING STOGROUP. Contains one or more tables. Segmented/universal tablespace types. Management at tablespace level (REORG, COPY, RECOVER).
tablespace storage database
COBOL ⭐ Featured
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Q: What is OBJECT-COMPUTER paragraph?

Answer:
OBJECT-COMPUTER describes execution machine. OBJECT-COMPUTER. IBM-3090. MEMORY SIZE clause deprecated. PROGRAM COLLATING SEQUENCE for sort order. SEGMENT-LIMIT for overlay. Mostly documentation now; compiler usually ignores.
object-computer configuration machine
JCL ⭐ Featured
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Q: What is SEGMENT parameter?

Answer:
SEGMENT limits output lines per dataset. On OUTPUT statement. SEGMENT=nnn pages per segment. JES creates multiple output datasets. Helps with huge print files. Easier to handle smaller pieces.
segment output pages
COBOL
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Q: What is SERVICE RELOAD?

Answer:
SERVICE RELOAD refreshes segmented program overlays. Forces segment reload from disk. Rarely needed with virtual storage. From overlay management era. May affect performance. Better to restructure program than use frequently.
service reload segments