Celle qui fuit et celle qui reste

The name of the entity that publishes or releases a product, such as a book, magazine, software release, or other creative work.

The individual, group, or entity responsible for creating the work. It may be a single author, a collaborative team (collective), or an editorial organization. The value is a free‑text string without any unit.

The name of the primary creator or contributor of a product, such as an author for a book, director for a film, or artist for a music album. It represents the individual or group credited with producing the main content and is typically presented as a full name in uppercase or title case.

The type of book collection or format that the product belongs to, such as paperback, hardcover, pocket edition, or special series editions.

The calendar date on which a book was first made available to the public or released for sale. It is expressed as a full year, month, and day (YYYY-MM-DD) and can be used to filter or sort books by their release period.

Indicates the languages available for a product or its content, whether it is a single language or a set of languages.

The total number of individual pages contained in a book or printed publication. It represents the physical sheets that make up the product, regardless of layout or formatting.

The calendar date on which the product was first made available to the public or released for sale. It is expressed as a full year, month, and day (YYYY-MM-DD) and can be used to filter or sort items by release period.

The main title or name of the product, such as a book, movie, software application, or any other item. It is the official label that appears on detail pages and in search results, helping users identify the product at a glance.