/usr/share/libpreludedb/ is in libpreludedb0 1.0.0-2.3ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/libpreludedb/classic/
/usr/share/libpreludedb/classic/mysql-update-14-1.sql
/usr/share/libpreludedb/classic/mysql-update-14-2.sql
/usr/share/libpreludedb/classic/mysql-update-14-3.sql
/usr/share/libpreludedb/classic/mysql-update-14-4.sql
/usr/share/libpreludedb/classic/mysql-update-14-5.sql
/usr/share/libpreludedb/classic/mysql-update-14-6.sql
/usr/share/libpreludedb/classic/mysql-update-14-7.sql
/usr/share/libpreludedb/classic/mysql.sql
/usr/share/libpreludedb/classic/mysql2pgsql.sh
/usr/share/libpreludedb/classic/mysql2sqlite.sh
/usr/share/libpreludedb/classic/pgsql-update-14-1.sql
/usr/share/libpreludedb/classic/pgsql-update-14-2.sql
/usr/share/libpreludedb/classic/pgsql-update-14-3.sql
/usr/share/libpreludedb/classic/pgsql-update-14-4.sql
/usr/share/libpreludedb/classic/pgsql-update-14-5.sql
/usr/share/libpreludedb/classic/pgsql-update-14-6.sql
/usr/share/libpreludedb/classic/pgsql-update-14-7.sql
/usr/share/libpreludedb/classic/pgsql.sql
/usr/share/libpreludedb/classic/sqlite-update-14-4.sql
/usr/share/libpreludedb/classic/sqlite-update-14-5.sql
/usr/share/libpreludedb/classic/sqlite-update-14-6.sql
/usr/share/libpreludedb/classic/sqlite-update-14-7.sql
/usr/share/libpreludedb/classic/sqlite.sql