is it related to any other manuscripts?
Yes, to "Codex Vaticanus Graecus 1209" and "Codex Ephraemi Rescriptus"
Codex Sinaiticus
"Codex Vaticanus Graecus 1209" and "Codex Ephraemi Rescriptus", attesting the Alexandrian text-type.
what is the name of the oldest bible in the world Codex Sinaiticus in which language was it written? Greek when was it written? Mid-4th century what does it include? The whole codex consists, with a few exceptions, of quires of eight leaves, a format popular throughout the Middle Ages. where is the book now? British Library in London is it accessible to public? Yes, it is on public display when was the book discovered? In 1761 who discovered it? Italian traveller, Vitaliano Donati where did he find this? In Saint Catherine's Monastery at Sinai in Egypt
wiki:19603944
Codex Sinaiticus [SEP] Text-type and relationship to other manuscripts
For most of the New Testament, "Codex Sinaiticus" is in general agreement with "Codex Vaticanus Graecus 1209" and "Codex Ephraemi Rescriptus", attesting the Alexandrian text-type. A notable example of an agreement between the Sinaiticus and Vaticanus texts is that they both omit the word εικη ('without cause', 'without reason', 'in vain') from Matthew 5:22 ""But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgement"". In John 1:1–8:38 "Codex Sinaiticus" differs from Vaticanus and all other Alexandrian manuscripts. It is in closer agreement with "Codex Bezae" in support of the Western text-type.