Daniel Roth [EMAIL PROTECTED] writes:
But MSSQL (SQL Server) does predicate locking.
Places a range lock on the data set, preventing other users from
updating or inserting rows into the data set until the transaction is
complete. This is the most restrictive of the four isolation levels.
Hi Tom
Apologies for my previous double post.
In 12.2.2.1. Serializable Isolation versus True Serializability
It sates: To guarantee true mathematical serializability, it is
necessary for a database system to enforce predicate locking, which
means that a transaction cannot insert or modify a
Daniel Roth [EMAIL PROTECTED] writes:
It sates: To guarantee true mathematical serializability, it is
necessary for a database system to enforce predicate locking, which
means that a transaction cannot insert or modify a row that would have
matched the WHERE condition of a query in another
