read skew
a transaction observes part but not all of another transaction's writes, producing an inconsistent view
read skew in a sentence
“Read skew caused the balance report to show funds debited but not yet credited.”
Related Words
write skew
two transactions each write different objects, with each failing to observe the other's writes
fractured read
one transaction writes two objects; another reads the current version of one but an older version of the other
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)