The database product came later in Infocom's life. The Z-machine was designed specifically to port Zork. Jimmy Maher covers the birth, life, and death of Infoco

The database product came later in Infocom's life. The Z-machine was designed specifically to port Zork. Jimmy Maher covers the birth, life, and death of Infocom in great detail: https://www.filfre.net/2012/01/the-birth-of-infocom/ https://www.filfre.net/2012/01/the-birth-of-infocom/