Archive for March 12th, 2008
一致读的步骤
Wednesday, March 12th, 2008
供参考：
1. Read the Data Block.
2. Read the Row Header.
3. Check the Lock Byte to determine whether there’s an ITL entry.
4. Read the ITL entry to determine the Transaction ID (Xid).
5. Read the Transaction Table using the Transaction ID. If the transaction has been committed and has a System Commit Number less than the query’s System [...]
