在游标定位在行中时，锁定这个被应用程序的某个事务访问的任何一行。
Locks any row accessed by a transaction of an application while the cursor is positioned on the row.
应用程序建模师在RS A中访问和导入类模型。
The application modeler accesses and imports the class model in RSA.
CDI为We b层带来了事务支持，这样我们就能在Web应用中轻松访问事务性资源了。
Through its services, CDI brings transactional support to the web tier which makes it easier to access transactional resources in web applications.
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