I am looking for some advice on cataloging best practices concerning accession numbers and child records. If an object has related children, do you include the accession number of the parent somewhere in the child record?

For instance, if 2015.2 includes 2015.2.1 through 2015.2.20, do you have the string "2015.2" as an alternate number (or another field) in each of the children?

If so, which field do you use?

If not, how do you determine the accession number of the parent? Through the relationship or as the root of the object number?

Many thanks in advance for your time and consideration. ~Chad