```elixir
creation_cmd =
  %s(psql -U #{ Keyword.get(storage_options, :username) } ) <>
  %s(--host #{ Keyword.get(storage_options, :hostname) } ) <>
  %s(-c "CREATE DATABASE #{ Keyword.get(storage_options, :database) } ) <>
  %s(#{database_options};" )
```