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多选题A developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in athread-safe manner. Which two can support this design goal？（）AStore the data in a local variable.BStore the data in an instance variable.CStore the data i

题目
多选题
A developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in athread-safe manner. Which two can support this design goal？（）
A

Store the data in a local variable.

B

Store the data in an instance variable.

C

Store the data in the HttpSession object.

D

Store the data in the ServletContext object.

E

Store the data in the ServletRequest object.

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相似问题和答案

第1题：

An application architecture specifies the technologies to be used to implement one or more information systems. It serves as an outline for detailed design, construction, and implementation. Given the models and details, include （ ）, we can distribute data and processes to create a general design of application architecture. The design will normally be constrained by architecture standards, project objectives, and （ ）. The first physical DFD to be drawn is the （ ）. The next step is to distribute data stores to different processors. Data（ ）are two types of distributed data which most RDBMSs support. There are many distribution options used in data distribution. In the case of（请作答此空）, we should record each table as a data store on the physical DFD and connect each to the appropriate server.

A.storing all data on a single server
B.storing specific tables on different servers
C.storing subsets of specific tables on different servers
D.duplicating specific tables or subsets on different servers

答案：B
解析：
应用架构说明了实现一个或多个信息系统所使用的技术，它作为详细设计、构造和实现的一个大纲。给定了包括逻辑数据流图和实体联系图在内的模型和详细资料，我们可以分配数据和过程以创建应用架构的一个概要设计。概要设计通常会受到架构标准、项目目标和所使用技术的可行性的制约。需要绘制的第一个物理数据流图是网络架构数据流图。接下来是分配数据存储到不同的处理器。数据分区和复制是大多数关系型数据库支持的两种分布式数据形式。有许多分配方法用于数据分布。在不同服务器上存储特定表的情况下，我们应该将每个表记为物理数据流图中的一个数据存储，并将其连接到相应的服务器。

第2题：

Which two statements correctly describe the relation between a data file and the logical databasestructures（）

  • A、An extent cannot spread across data files.
  • B、A segment cannot spread across data files.
  • C、A data file can belong to only one tablespace.
  • D、A data file can have only one segment created in it.
  • E、A data block can spread across multiple data files as it can consist of multiple operating system （OS） blocks.

正确答案:A,C

第3题：

M．Jackson suggested the data structure oriented software design method．Which of the following structure can be introduced by using input data structure?

A．algorithm structure

B．procedure structure

C．code structure

D．program structure


正确答案：D

第4题：

A Company.com developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in a thread-safe manner.  Which two can support this design goal？（）

  • A、 Store the data in a local variable.
  • B、 Store the data in an instance variable.
  • C、 Store the data in the HttpSession object.
  • D、 Store the data in the ServletContext object.
  • E、 Store the data in the ServletRequest object.

正确答案:A,E

第5题：

A developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in athread-safe manner. Which two can support this design goal？（）

  • A、Store the data in a local variable.
  • B、Store the data in an instance variable.
  • C、Store the data in the HttpSession object.
  • D、Store the data in the ServletContext object.
  • E、Store the data in the ServletRequest object.

正确答案:A,E

第6题：

An application architecture specifies the technologies to be used to implement one or more information systems. It serves as an outline for detailed design, construction, and implementation. Given the models and details, include （请作答此空）, we can distribute data and processes to create a general design of application architecture. The design will normally be constrained by architecture standards, project objectives, and （ ）. The first physical DFD to be drawn is the （ ）. The next step is to distribute data stores to different processors. Data（ ）are two types of distributed data which most RDBMSs support. There are many distribution options used in data distribution. In the case of （ ）, we should record each table as a data store on the physical DFD and connect each to the appropriate server.


A.logical DFDs and ERD
B.ideal object model and analysis class model
C.use case models and interface prototypes
D.physical DFDs and database schema


答案：A
解析：
应用架构说明了实现一个或多个信息系统所使用的技术，它作为详细设计、构造和实现的一个大纲。给定了包括逻辑数据流图和实体联系图在内的模型和详细资料，我们可以分配数据和过程以创建应用架构的一个概要设计。概要设计通常会受到架构标准、项目目标和所使用技术的可行性的制约。需要绘制的第一个物理数据流图是网络架构数据流图。接下来是分配数据存储到不同的处理器。数据分区和复制是大多数关系型数据库支持的两种分布式数据形式。有许多分配方法用于数据分布。在不同服务器上存储特定表的情况下，我们应该将每个表记为物理数据流图中的一个数据存储，并将其连接到相应的服务器。

第7题：

SQ L*Loader is a utility that can perform which two tasks？（）

  • A、Load data from a disk， tape， or named pipes.
  • B、Load data into an Oracle database using DML statements.
  • C、Extract， reorganize， and insert data within an Oracle database.
  • D、Load data from external files into tables in an Oracle database.
  • E、Load data into an Oracle database using operating system commands.
  • F、Load data directly from a non-Oracle database to an Oracle database.

正确答案:A,D

第8题：

An application architecture specifies the technologies to be used to implement one or more information systems. It serves as an outline for detailed design, construction, and implementation. Given the models and details, include （ ）, we can distribute data and processes to create a general design of application architecture. The design will normally be constrained by architecture standards, project objectives, and （ ）. The first physical DFD to be drawn is the （ ）. The next step is to distribute data stores to different processors. Data（请作答此空）are two types of distributed data which most RDBMSs support. There are many distribution options used in data distribution. In the case of（ ）, we should record each table as a data store on the physical DFD and connect each to the appropriate server.


A.vertical partitioning and horizontal replication
B.vertical replication and horizontal partitioning
C.integration and distribution
D.partitioning and replication


答案：D
解析：
应用架构说明了实现一个或多个信息系统所使用的技术，它作为详细设计、构造和实现的一个大纲。给定了包括逻辑数据流图和实体联系图在内的模型和详细资料，我们可以分配数据和过程以创建应用架构的一个概要设计。概要设计通常会受到架构标准、项目目标和所使用技术的可行性的制约。需要绘制的第一个物理数据流图是网络架构数据流图。接下来是分配数据存储到不同的处理器。数据分区和复制是大多数关系型数据库支持的两种分布式数据形式。有许多分配方法用于数据分布。在不同服务器上存储特定表的情况下，我们应该将每个表记为物理数据流图中的一个数据存储，并将其连接到相应的服务器。

第9题：

A developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in a thread-safe manner. Which two can support this design goal？（）

  • A、 Store the data in a vocal variable.
  • B、 Store the data in an instance variable.
  • C、 Store the data in the HttpSession object.
  • D、 Store the data in the ServletContext object.
  • E、 Store the data in the ServletRequest object.

正确答案:A,E

第10题：

Which two data types can be converted to LOBs using an ALTER TABLE… MODIFY command？（）

  • A、RAW
  • B、LONG
  • C、VARCHAR
  • D、LONG RAW

正确答案:B,D

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