Fixing the race in the Debit method with a monitor can lead to too much locking. What is needed is a lock that protects all the memory that the Debit method uses and can be held for the duration of the method. If you used a monitor to do this, it would be like the Accounts class...
(In the context of CAS, running with full trust means the code can do whatever the user running it could do on the system. If the process running full-trust code does not have admin privileges, even full trust code does not have unlimited access to the machine's...
One of my favorite meta features in SQL Developer, the Statements panel shows everything we send across the JDBC driver for thin connections to the database. So you can change things in the preference, clear the panel, ‘do stuff’, and check the panel again to see what’s changed. Like...
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there is no useful cleanup to do so the lock statement is appropriate. The lock statement would also be appropriate if everything its body did was read-only. In general, however, more cleanup work needs to be done if an exception happens. In this case a lock statement ...
SSIS = SQL Server Integration Services. From Microsoft:Microsoft Integration Services is a platform ...
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SQL Server 2022 CTP 2.1 Improvements To Parameter Sensitive Plan Optimization SQL Server 2022: Introduces the DATETRUNC Function, So You Can Truncate Your Dates And Stuff SQL Server 2022 Parameter Sensitive Plan Optimization: Does Not Care To Fix Your Local Variable Problems ...
Stewart调查了1299个因患癌而死亡的儿童，另调查了1299个同年出生但没患癌的儿童作为对照，用来研究胚胎期暴露于X线的儿童患癌的危险性。两组儿童的母亲在怀孕期间是否用X线照射腹部的情况以及x2检验结果如下： 儿童患癌与其母亲孕期照射X线的关系 卡方检验结果显示x2＝29.8，P＜0.001。 请您计算OR值，并简要地...
Nginx, pronounced "engine-ex", is an open-source web server, also used as a reverse proxy, HTTP cache & load balancer. Learn more from this in-dept… Reading time 3 min read Updated date August 14, 2023 Post type Knowledge Base