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举一反三
【单选题】Do you know the girl ________ father owns a company?
A.
who
B.
which
C.
that
D.
whose
【单选题】在 Visual FoxPro 6.0 中,若所建立索引的字段值不允许重复,并且一个表中可以创建多个,这种索引应该是( )
A.
候选索引
B.
主索引
C.
普通索引
D.
唯一索引
【简答题】ACME Atlantic is a well-known and respected trading company. We handle import directly from manufacturers in 35 different countries, often to our own specifications and currently export to 46 differen...
【单选题】You are the database administrator for a retail company. The company owns 270 stores. Every month, each store submits approximately 2,000 sales records, which are loaded into a SQL Server 2000 databas...
A.
Export all records from the Sales table to a temporary table. Truncate the Sales table, and then reload the records from the temporary table.
B.
Export all records from the Sales table to a text file. Drop the Sales table, and then reload the records from the text file.
C.
Use the DBCC CHECKIDENT statement to reseed the Sales table's IDENTITY property.
D.
Set the Sales table's IDENTITY_INSERT property to ON. Add new sales records that have the desired key values.
【单选题】在 Visual FoxPro 6.0 中,有关参照完整性的删除规则正确的描述是( )
A.
如果删除规则选择的是“限制”，则当用户删除父表中的记录时，系统将自动删除子表中的所有相关记录。
B.
如果删除规则选择的是“级联”，则当用户删除父表中的记录时，系统将禁止删除与子表相关的父表中的记录
C.
如果删除规则选择的是“忽略”，则当用户删除父表中的记录时，系统不负责检查子表中是否有相关记录
D.
上面三种说法都不对
【简答题】A list of what the company owns and owes.
【单选题】Having been sent to the wrong address, the supplies ordered from the Acme Company did not arrive until______ the first day of the year.
A.
on
B.
since
C.
after
D.
at
【简答题】ACME Atlantic is a well-known and respected trading company. We handle with imports directly from manufacturers in 35 different 【M1】______ countries, often to our own specifications, and currently imp...
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