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A user needs to create a trigger that will update table T2 whenever a row is added to table T1. Assuming the user has all appropriate privileges for table T2, which privilege is required on table T1 to create the trigger?()A.REFERENCESB.SELECTC.UPDATED.AL

题目

A user needs to create a trigger that will update table T2 whenever a row is added to table T1. Assuming the user has all appropriate privileges for table T2, which privilege is required on table T1 to create the trigger?()

A.REFERENCES

B.SELECT

C.UPDATE

D.ALTER


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    下列哪组SQL命令全部属于数据定义语句的命令?()

    A.CREATE,DROP,ALTER

    B.CREATE,DROP,SELECT

    C.CREATE,DROP,GRANT

    D.CREATE,DROP,UPDATE


    CREATE,DROP,ALTER

  • 第2题:

    【单选题】对于建立在数据库上的DDL触发器,常用的激活DDL触发器的事件不包括()

    A.Create_Table,Alter_Table,Drop_Table

    B.Create_View,Alter_View,Drop_View

    C.Create_Procedure,Alter_Procedure,Drop_Procedure

    D.Rollback


    Rollback

  • 第3题:

    数据库对象是数据库的组成部分,常用的数据库对象有表(Table)、索引(Index)、视图(View)、图表(Diagram)、用户(User)、()等。

    A.默认值(Default)

    B.规则(Rule)

    C.触发器(Trigger)

    D.存储过程(Stored Procedure)


  • 第4题:

    查找引⽤函数的搜索查找范围是由()参数指定的。

    A.Table_array

    B.Index_number

    C.Row_number

    D.Range_lookup


    Table_array

  • 第5题:

    我们所说的CRUD也就是添加(Create)、查询(Retrieve)、更新(Update)和()操作的简称。


    删除##%_YZPRLFH_%##Delete

  • 第6题:

    2、在HBase中,创建一张名为“user_c”的表,该表有一个名为“User”的列族,其相应Shell命令应该是()。

    A.create ‘user_c’, {name => ‘User’};

    B.create {‘user_c’ => ‘User’};

    C.create ‘user_c’, {NAME = ‘User’};

    D.create ‘user_c’, {NAME => ‘User’};


    create ‘ user_c ’ , {NAME => ‘ User ’ };