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.
It is situated on a mountain ridge above the Sacred Valley which is 80 kilometres (50 mi) northwest of Cuzco and through which the Urubamba River flows. Most archaeologists believe that Machu Picchu was built as an estate for the Inca emperor Pachacuti (1438â1472).n 2007, Machu Picchu was voted one of the New Seven Wonders of the World in a worldwide Internet poll. Machu Picchu was built in the classical Inca style, with polished dry-stone walls.