assignment record造句

Global unicast assignment records can be found at the various RIRs or other websites.
Each week, active assignment records are used to create transaction entries against which a number of hours worked by the candidate on the job order is entered.
From the Central Office Code Assignment Records page, I downloaded the " All States " zipped text file, opened it in Excel, then used some formulas and filters to find currently used instances where the area code is the same as the prefix.
It's difficult to find assignment record in a sentence. 用assignment record造句挺难的