See the File Versioning Rules. To specify a companion file, the primary key of the companion parent in the File table must be authored into the Version column of the record for the companion. In the following example, FileA is the companion parent and FileB is the companion file. File Table (partial) In this example, the installation state of FileB depends on the File Versioning Rules and the versioning information for FileA.
Machu Picchu was built around 1450, at the height of the Inca Empire. Its construction appears to date to the period of the two great Inca rulers, Pachacutec Inca Yupanqui (1438â71) and TÃºpac Inca Yupanqui (1472â93). It was abandoned just over 100 years later, in 1572, as a belated result of the Spanish Conquest.
Machu Picchu. Machu Picchu is by far the best known Inca site of them all and once of the best known tourist destinations in the world. In 1983 Machu Picchu was declared as a UNESCO World Heritage Site and in 2007 it was voted to be one of the New Seven Wonders of the World. Machu Picchu was constructed in the 15th century by Inca Pachacutec, the exact purpose of the site is unknown as the only records the Incas kept were in the form of Khipus (knotted strings) and the ability to read them died following the Spanish conquest.