bdfd1m1e | Database Administration |
You can subdivide the ordinals in a fixed file into groups called partitions or interleaves. Each collection of blocks in a partition or interleave is still referred to as a file. An application program normally processes a single file, that is a single partition or interleave, but it need not specify the partition or interleave until run time (it sets a PARTITN or INTERLV parameter in the program to define which partition or interleave it is to access). The total number of prime blocks (ordinals) required is:
Number of partitions or interleaves x Number of prime blocks in each file
In each partition or interleave, each file contains the same number of prime blocks (ordinals) as the other files in the partition or interleave. Partitioning and interleaving is not available with miscellaneous files.
With partitioned or interleaved files, you can specify the total number of blocks required by setting the EO# parameter in the DBDEF macro.