You are a professional level SQL Server 2005 database administrator in an international corporation named Wiikigo. You are experienced in implementing high-availability solutions， monitoring the database server， and design deployment. In the company， you major job is the deployment， maintenance and support of Microsoft SQL Server 2005. You work as a database administrator for your company. A SQL Server 2005 computer is managed by you， and a database named Customers is included by the SQL Server 2005 computer. A table named CustInfo is included by the database. An identity column named CustID and an nvarchar column named CustName are included by the table. According to the company requirement， rows which duplicate CustName values are included should be moved from the CustInfo table every year. However， the company requests to have rows removed from the CustInfo table after the rows have been manually examined and verified as being duplicates. Since you are the technical support， you are required to think out a method to have potential duplicate rows identified for manual examination. The minimum amount of administrative effort should be utilized. Which action should be performed to finish the task？（） A trigger should be created for the CustInfo table so as to roll back INSERT queries that duplicate data is included.。 A new unique index should be created on the CustName column. And then， IGNORE_DUP_KEY = ON should be specified when creating index.。 On the CustName column， a foreign key constraint should be created， and a distinct list of CustName values is referenced by the foreign key constraint.。 A SELECT INTO query should be utilized， and GROUP BY and HAVING clauses should be included by the query to create a new table that contains duplicate rows from the CustInfo table.。
因子Ⅶ和因子V主要含于下列哪种血液成分中（） 硫酸钡吸附血浆。 硫酸钡吸附血清。 正常人新鲜血浆。 正常人新鲜血清。
View the Exhibit to examine the Automatic Database Diagnostic Monitor (ADDM) tasks. Which statement describes the consequence?（） The ADDM task is filtered to suppress the Segment Advisor suggestions for the SCOTT schema.。 The ADDM task is filtered to produce the Segment Advisor suggestions for the SCOTT schema only.。 The PL/SQL block produces an error because the my_instance_analysis_mode_task task has not been reset to its initial state.。 All subsequent ADDM tasks including my_instance_analysis_mode_task are filtered to suppress the Segment Advisor suggestions for the SCOTT schema.。
什么是电容器？
Which two statements are true about constraints? （） The UNIQUE constraint does not permit a null value for the column.。 A UNIQUE index gets created for columns with PRIMARY KEY and UNIQUE constraints.。 The PRIMARY KEY and FOREIGN KEY constraints create a UNIQUE index.。 The NOT NULL constraint ensures that null values are not permitted for the column.。
药物的日处方量趋于合理时DUI值应接近（）
