Answer Posted / techy

Sameple Data Base Descriptor Generator :

PRINT NOGEN
DBD NAME=VENDOR,ACCESS=HDAM
DATASET DD1=VEND,DEVICE=3380
SEGM NAME=VENSEG,PARENT=0,BYTES=10
FIELD NAME=(VENCODE,SEQ,U),BYTES=10,START=1,TYPE=C
SEGM NAME=ITEMSEG,PARENT=VENSEG,BYTES=5
FIELD NAME=(ITEMCODE,SEQ,U),BYTES=5,START=1,TYPE=C
SEGM NAME=LOCNSEG,PARENT=ITEMSEG,BYTES=9
FIELD NAME=(LOCNCODE,SEQ),BYTES=3,START=1,TYPE=C
FIELD NAME=ORDDATE,BYTES=6,START=4,TYPE=C
DBDGEN
FINISH
END

Define pcb?

1086

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What is a segment in ims?

1027

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What are the retrieval sequences in ims db?

1357

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Explain the advantage of dynamic generation of acb?

3204

---

Explain the two ways in which dl/i interface can be invoked?

3542

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What are the objectives of dbms in ims?

1099

---

What information does a dbd contain?

1036

---

What is the need for a secondary index in ims?

1079

---

What are the disadvantages of a hierarchical database?

3287

---

What is an ims database?

1154

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What is the maximum number of fields allowed per segment and what is the maximum number of fields per database?

1045

---

Explain the processing modes available in ims db?

3637

---

What is mpp mode?

1142

---

What is the advantage of dynamic generation of acb?

936

---

Explain the disadvantage of dynamic generation of acb?

954

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