Object Background_Education which is the key field we can use to select the data .
I have three fields userid , Id , lastmodified which one we can take .
ID and UserID are the key fields. You mention fields that are filterable.
ID is a sequence number generated by SFSF.
If you need to filter for other fields i would create a picklist. In this case you should be able to filter for other fields but the disadvantage is that background objects use old picklists used in employee profile. You should develop a value mapping
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