(B)0[mcontext-variable-clause =
qqwqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqwq>
tq> [4mOLD[m CONTEXT old-context-var qu
mq> [4mNEW[m CONTEXT new-context-var qj
An optional clause that can contain aliases for old and new
states of the context variable of the triggering statement.
1 – old-context-var
A temporary name used to refer to the record values as they
existed before a modify operation occurred. You use an old-
context-var only when the trigger occurs after a modify
operation, and must be a different name than the one given for
context_var.
2 – new-context-var
A temporary name used to reference the new record values about
to be applied by modify operation. You use a new-context-var only
when the trigger occurs before a modify operation, and must be a
different name than the one given for context-var.