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根据system V5说明文档:
The maximum number of fields in a record format is 8000. If any of the fields in the record format are
date, time, timestamp, variable length, or allows the null value, then the actual maximum number of fields
can be less than 8000. The maximum number of fields can vary depending on the number of fields and
combinations of fields that occur within the record format. The maximum number of bytes in a record
format is 32 766 if variable length fields are not included and 32 740 if variable length fields are included.
Table 1 on page 22 describes rules for determining the total length of the record format.
iSeries
DDS Reference: Physical and Logical Files
Version 5
我曾经在北美面试遇时,笔试考这方面的知识。 |
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