fractured read
one transaction writes two objects; another reads the current version of one but an older version of the other
fractured read in a sentence
“A fractured read made the invoice total inconsistent with its line items.”
Related Words
dirty write
transactions overwrite one another forming a cycle linked purely by write-write dependencies (G0)
aborted read
an aborted transaction's write is visible to a committed transaction (G1a)
intermediate read
a transaction reads a version from the middle of another transaction rather than its final committed write (G1b)
cyclic information flow
transactions observe or overwrite each other's writes in a cyclic pattern (G1c)
garbage read
a database returns an object version not produced by any write, often from corruption or race conditions
lost update
a committed transaction's effects are lost due to another transaction's concurrent write to the same object (P4)