数据的逻辑组织形式有（） 顺序组织、直接组织、链表组织。 链表组织、树型组织、直接组织。 顺序组织、树型组织、网状组织。 网状组织、树型组织、链表组织。
You are a professional level SQL Sever 2008 Database Administrator in an international corporation named Wiikigo. You are experienced in managing databases in an enterprise-level organization, optimizing and sustaining the database life cycle. In the company, your job is to implement solutions on security, troubleshooting, deployment and optimization. A SQL Server 2008 infrastructure is managed by you. A maintenance strategy should be designed for a mission-critical database, and a large table named Orders is contained by the database. Index maintenance operations are contained in the design plan. When you design the strategy, the facts listed below should be taken into consideration. First, the users continuously access to the Orders table in the database. Secondly, a column of the xml data type is contained by Orders table. Thirdly, the new rows are regularly added to the Orders table. Fourthly, the average fragmentation for the clustered index of the Orders table is no more than 2 percent. A strategy should be designed to have the performance of the queries on the table optimized. Which action will you perform?（） The clustered index of the Orders table should be dropped.。 The clustered index of the Orders table offline should be rebuilt once a month.。 The clustered index of the Orders table should be excluded from scheduled reorganizing or rebuilding operations.。 The clustered index of the Orders table should be reorganized by reducing the fill factor.。
强调迁移就是心理官能发展的结果，这一理论是（） 形式训练说。 共同要素说。 经验类化说。 关系转换说。
You have an enterprise subordinate certification authority （CA）. You have a group named Group1. You need to allow members of Group1 to publish new certificate revocation lists. Members of Group1 must not be allowed to revoke certificates. What should you do（） Add Group1 to the local Administrators group.。 Add Group1 to the Certificate Publishers group.。 Assign the Manage CA permission to Group1.。 Assign the Issue and Manage Certificates permission to Group1.。
一般认为，速动比率在（）以上较好。 2。 1。 0.8。 0.5。
数据库的数据模型是指（）
