“视听讲做结合法”在具体运用时应注意哪些问题？
Application developers in your company create an assembly that contains a CLR function. This CLR function reads data from a spreadsheet, performs some calculations, and returns the data to a SQL Server 2005 computer. You need to register the assembly with SQL Server 2005 by using the CREATE ASSEMBLY statement and the least privileged security permission set. Which permission set should you use? （） Default 。 SAFE 。 EXTERNAL_ACCESS 。 UNSAFE。
Which statements are true about logical structures of the Oracle database（） Each segment contains one or more extents.。 Multiple tablespaces can share a single data file。 A data block is the smallest unit of input/output （I/O） in data files.。 It is possible to have tablespaces of different block sizes in a database.。 Each data block in the database always corresponds to one operating system block。
You are managing an Oracle Database 11g database. You configured the database to run in ARCHIVELOGmode. Which two statements are true in this scenario（） You must shut down the database instance to perform the backups.。 You must configure the Flash Recovery Area （FRA） for the database.。 You can perform complete database backups without closing the database.。 All the previous closed database backups including control files become invalid after you configure thedatabase to ARCHIVELOG mode.。
下列关于近代中国社会主要矛盾的表述，不正确的一项是（）。 主要矛盾有两对。 由近代中国社会性质决定的。 决定了中国革命任务的双重性。 中外矛盾自始至终占主导地位。
What happens on failure of a pre or post event script？（）
