NAB-type files with fixed-length items

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The following figure shows an example of the DBDEF statements to describe a NAB-type file with fixed-length items.

Figure 1. NAB-Type File with Fixed-Length Items (CBV=1)
Alternative text description not available.
Note:
  • This figure shows a file ("PO") which contains a field called yyyyINX.
  • yyyyINX contains a next available byte (NAB) pointer, which defines where the last item in the block is located.
  • The items have a fixed-length, and each contain a reference to a "PR" block.
  • The reference is in an item, so the ID2 parameter is specified.