METHOD, SYSTEM, AND DATA STRUCTURES FOR SUPERIMPOSING DATA RECORDS IN A FIRST DATA FORMAT TO MEMORY IN A SECOND DATA FORMAT

Provided is a method, system, and program for superimposing a data record in a first data format onto a storage space in a second data format. A plurality of control blocks are built in memory indicating operations to perform to transfer components of the data record in the first data format to locations in memory in the second data format. A data transfer device is signaled to access the control blocks built in the memory. The data transfer device accesses the control blocks in the memory and then transfers components of the data record in the first data format to the memory to be stored in the second data format according to the operations indicated in the control blocks.