The Digest of Justinian, Volume 1When Justinian became sole ruler of the Byzantine Empire in A. D. 527, he ordered the preparation of three compilations of Roman law that together formed the Corpus Juris Civilis. These works have become known individually as the Code, which collected the legal pronouncements of the Roman emperors, the Institutes, an elementary student's textbook, and the Digest, by far the largest and most highly prized of the three compilations. The Digest was