What are the permissible data structures for the data staging area? Briefly describe the pros and cons of each.在数据准备区中允许使用的数据结构有哪些?各有什么优缺点?

What are the permissible data structures for the data staging area? Briefly describe the pros and cons of each.

在数据准备区中允许使用的数据结构有哪些?各有什么优缺点?


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( 36 ) 设有定义 :struct complex{ int real,unreal; } data1={1,8},data2;则以下赋值语句中错误的是A ) data2=data1;B ) data2= ( 2,6 ) ;C ) data2.real=data1.real;D ) data2.real=data1.unreal;

若要对Data类中重载的加法运算符成员函数进行声明,下列选项中正确的是( )。A) Data+(DatA) ;B) Data operator+{Data};C) Data+operator{Data};D) operator+(Data,DatA) ;A.B.C.D.

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在有13个元素构成的有序表data[1..13]中,用折半查找(即二分查找,计算时向下取整)方式查找值等于data[8]的元素时,先后与(41)等元素进行了比较。A.data[7]. data[6]. data[8]B.data[7]. Data[8]C.data[7]. data[10]. data[8]D.data[7]. data[10]、data[9]. data[8]

在有13个元素构成的有序表data[1..13]中,用折半查找(即二分查找,计算时向下取整)方式查找值等于data[8]的元素时,先后与( )等元素进行了比较。A.data[7]、data[6]、data[8]B.data[7]、data[8]C.data[7]、data[10]、data[8]D.data[7]、data[10]、data[9]、data[8]

The term computer describes a device made up of a combination of electronic components.By itself, a computer has no (请作答此空) and is referred to as hardware, which means simply the physical equipment. The hardware can't be used until it is connected to other elements, all of which constitute the six parts of a computer-based information system,hardware,software,data/information, people, procedures and communications.A system is defined as a collection of related components that ( ) to perform a task in order to accomplish a goal. Any organization that uses information technology will have a computer-based information system to provide managers (and various categories of employees with the appropriate kind of information to help them make decisions.Systems analysis and design is to ascertain how a system works and then take steps to make it ( ) Often, a system approach is used to define, describe, and solve a problem or to meet a(an)( )From time to time, organizations need to ( )their information systems, in, responseto new marketing' opportunities, modified government regulations, the introduction .of new technology, merger with another company, or other developments. When change is needed, the time is ripe for applying the principles of systems analysis and design.A.informationB.softwareC.intelligenceD.Data

The term computer describes a device made up of a combination of electronic components.By itself, a computer has no ( 1) and is referred to as hardware, which means simply the physical equipment. The hardware can't be used until it is connected to other elements, all of which constitute the six parts of a computer-based information system,hardware,software,data/information, people, procedures and communications. A system is defined as a collection of related components that ( 72) to perform a task in order to accomplish a goal. Any organization that uses information technology will have a computer-based information system to provide managers (and various categories of employees with the appropriate kind of information to help them make decisions. Systems analysis and design is to ascertain how a system works and then take steps to make it (73 ) Often, a system approach is used to define, describe, and solve a problem or to meet a(an)( 74) From time to time, organizations need to (75 ) their information systems, in, response to new marketing' opportunities, modified government regulations, the introduction .of new technology, merger with another company, or other developments. When change is needed, the time is ripe for applying the principles of systems analysis and design.(1)应选( )。 A. informationB. software C. intelligenceD. Data

将数据库导入R语言后,可用()显示数据库结构,用()查看数据库行列数,用()查看每个变量的基本统计值。A.str(data) summary(data) dim(data)B.str(data) dim(data) summary(data)C.dim(data) summary(data) str(data)D.summary(data) dim(data) str(data)

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