Correct usage of xid to upsert with Live uploader

[porsche (porscheme)]

@amaster507

dgraph live --files /root/dgraph/data --schema /root/dgraph/schema/my_schema.rdf --alpha dgraph-alpha:9080 --zero dgraph-zero:5080 --format=rdf --upsertPredicate “xid” -b 1500

• Are you saying, I should use --upsertPredicate “Student.xid”?
• If yes, I should run the upsert command once for each type?