/usr/share/pgmodeler/schemas/xml/dtd/ is in pgmodeler-common 0.9.1~beta-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pgmodeler/schemas/xml/dtd/aggregate.dtd
/usr/share/pgmodeler/schemas/xml/dtd/baseelements.dtd
/usr/share/pgmodeler/schemas/xml/dtd/basetype.dtd
/usr/share/pgmodeler/schemas/xml/dtd/cast.dtd
/usr/share/pgmodeler/schemas/xml/dtd/collation.dtd
/usr/share/pgmodeler/schemas/xml/dtd/column.dtd
/usr/share/pgmodeler/schemas/xml/dtd/constraint.dtd
/usr/share/pgmodeler/schemas/xml/dtd/conversion.dtd
/usr/share/pgmodeler/schemas/xml/dtd/customidxs.dtd
/usr/share/pgmodeler/schemas/xml/dtd/database.dtd
/usr/share/pgmodeler/schemas/xml/dtd/dbmodel.dtd
/usr/share/pgmodeler/schemas/xml/dtd/domain.dtd
/usr/share/pgmodeler/schemas/xml/dtd/element.dtd
/usr/share/pgmodeler/schemas/xml/dtd/eventtrigger.dtd
/usr/share/pgmodeler/schemas/xml/dtd/extension.dtd
/usr/share/pgmodeler/schemas/xml/dtd/function.dtd
/usr/share/pgmodeler/schemas/xml/dtd/genericsql.dtd
/usr/share/pgmodeler/schemas/xml/dtd/index.dtd
/usr/share/pgmodeler/schemas/xml/dtd/label.dtd
/usr/share/pgmodeler/schemas/xml/dtd/language.dtd
/usr/share/pgmodeler/schemas/xml/dtd/metadata.dtd
/usr/share/pgmodeler/schemas/xml/dtd/opclass.dtd
/usr/share/pgmodeler/schemas/xml/dtd/operator.dtd
/usr/share/pgmodeler/schemas/xml/dtd/opfamily.dtd
/usr/share/pgmodeler/schemas/xml/dtd/permission.dtd
/usr/share/pgmodeler/schemas/xml/dtd/relationship.dtd
/usr/share/pgmodeler/schemas/xml/dtd/role.dtd
/usr/share/pgmodeler/schemas/xml/dtd/rule.dtd
/usr/share/pgmodeler/schemas/xml/dtd/schema.dtd
/usr/share/pgmodeler/schemas/xml/dtd/sequence.dtd
/usr/share/pgmodeler/schemas/xml/dtd/table.dtd
/usr/share/pgmodeler/schemas/xml/dtd/tablespace.dtd
/usr/share/pgmodeler/schemas/xml/dtd/tag.dtd
/usr/share/pgmodeler/schemas/xml/dtd/textbox.dtd
/usr/share/pgmodeler/schemas/xml/dtd/trigger.dtd
/usr/share/pgmodeler/schemas/xml/dtd/usertype.dtd
/usr/share/pgmodeler/schemas/xml/dtd/view.dtd