/usr/share/pgmodeler/schemas/alter/ is in pgmodeler-common 0.9.1~beta-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pgmodeler/schemas/alter/collation.sch
/usr/share/pgmodeler/schemas/alter/column.sch
/usr/share/pgmodeler/schemas/alter/constraint.sch
/usr/share/pgmodeler/schemas/alter/database.sch
/usr/share/pgmodeler/schemas/alter/diff.sch
/usr/share/pgmodeler/schemas/alter/domain.sch
/usr/share/pgmodeler/schemas/alter/eventtrigger.sch
/usr/share/pgmodeler/schemas/alter/extension.sch
/usr/share/pgmodeler/schemas/alter/function.sch
/usr/share/pgmodeler/schemas/alter/index.sch
/usr/share/pgmodeler/schemas/alter/owner.sch
/usr/share/pgmodeler/schemas/alter/permission.sch
/usr/share/pgmodeler/schemas/alter/relationship.sch
/usr/share/pgmodeler/schemas/alter/rename.sch
/usr/share/pgmodeler/schemas/alter/role.sch
/usr/share/pgmodeler/schemas/alter/schema.sch
/usr/share/pgmodeler/schemas/alter/sequence.sch
/usr/share/pgmodeler/schemas/alter/table.sch
/usr/share/pgmodeler/schemas/alter/tablespace.sch
/usr/share/pgmodeler/schemas/alter/truncate.sch
/usr/share/pgmodeler/schemas/alter/usertype.sch