2009-7-27 P,1
Unit 12
Data Transfer in Digital Circuits
Chapter Three
&Part4 Extensive Reading@ Part 1 Notes to Text
@Part5 Notes to Passage& Part 2 Word Study
@Part3 Practice on Text @Part6 Practice on Passage
2009-7-27 P,2
@ Part 1 Notes to Text
1)Data is typically grouped into packets that are either 8,16,or 32
bits long,and passed between temporary holding units called
registers.人们通常（或往往）将数据打包，使之形成不是 8,16位，就是 32位长的数据包。这样一来，数据便可以在被称作寄存器的临时贮存单元之间进行传递。
注释,该句可视为并列复合句；第一分句中包含了定语从句 that are
either 8,16,or 32 bits long；注意副词 typically，原意为“代表性地,
作为特色地”，但此处则表示“通常，往往”的意思；第二分句
passed between temporary holding units called registers中由于主语和谓语中的助动词与第一分句的完全相同，故被省略。
2） To transfer data from one register to another,the output
conductors of one register are switched onto a channel of parallel
wires referred to as a bus,为了在不同的寄存器中传输数据，寄存器的输出导线可与谓之总线的平行线信道相连接。
注释,该句是个简单句，谓语采用了被动形式；不定式 To transfer data
from one register to another 显然是目的状语； referred to as a bus
是过去分词短语作定语，修饰 parallel wires，相当于一个定语从句
which are referred to as a bus。
Data Transfer in Digital Circuits
2009-7-27 P,3
3） It is important to note that after any digital data transfer,the
source and destination registers are equal; the source register
is not erased when the data is sent,需要注意的是，在数据被传输后，源寄存器和目标寄存器中的数据是同等的，源寄存器并不会因此而被删除。
注释,此句是 It is + adj,+ to do sth.句型。 it是形式主语，不定式是真正的主语； that引导的从句充当 note的宾语。该宾语从句中包含了两个时间状语从句；分别是 after any digital data transfer和 when
the data is sent；两个并列的分句，分别是,the source and
destination registers are equal和 the source register is not
erased。
4） Not only will a bus contention result in the loss of
information,but it also may damage the electronic circuitry,总线竟用不仅会造成信息的丢失，而且还会对电子电路系统造成损害。
注释,Not only……,but also……,不但 …… 而且 ……,,是表示递进关系的句型。因为句子以表示否定意义的 not开头，所以前半部分要用部分倒装的语序。
2009-7-27 P,4
5） Bus signals that exit microprocessor chips and other
VLSI circuitry are electrically capable of traversing about
one foot of conductor on a printed circuit board,if many
devices are connected to it,如果有许多设备与同一印刷电路板相连，微处理器芯片中的总线信号以及它 VLSI电路系统中的总线信号就能以电子的形式通过印刷电路板上大约一英尺长的导线。
注释,此句是复合句。主句的主要结构是“主语（ Bus
signals） +谓语（ are） +表语（ capable of… ）”；定语从句
that exit microprocessor chips and other VLSI circuitry修饰主语； if引导条件状语从句。
End
2009-7-27 P,5 End
1,capture v,获取 10.traverse v,经过；通过
2,content n,内容 11.susceptible adj,敏感的
3,erase v,删除 12.distortion n,失真
4,conflict n,冲突 13.environment n,环境
5,contention n,竞争 14.pin n,管脚
6,circuitry n,电路，电路系统 15.amplifier n,信号增强器
7,half-duplex channels n,半双工信道 16.buffer n,缓冲
8,integrated circuit 集成电路 17.boost v,推进
9,chip n,芯片 18.distribution n,分配
& Part 2 Word Study
2009-7-27 P,6
Task 1,Listening training
Dictation of some key words
Directions,You will hear some key words twice,most of which are taken from
the Word Study,Then finish the Crossword Puzzle,(See you book p,)
2,Dictation of some key expressions
Directions,You will hear some key expressions twice,most of which are
taken from this text,Then you are asked to complete the missing words.
@Part3 Practice on Text
1) temporary________________
2) _______________conductors
3) _______________parallel wires
4) in the _______________register
5) a central_______________
6) external____________________
holding units
the output
a channel of
destination
control unit
noise and distortion
2009-7-27 P,7
Read and Reply
Directions:Students are required to read aloud the whole text after
the teacher,Then give short answers to the following questions:
a) How can data be transferred from one register to another?
b) What’ s the result of a bus contention?
Task 2,Read,Write and Translate
The output conductors of one register are switched onto a
channel of parallel wires referred to as a bus,The input
conductors of another register,which is also connected to the
bus,
Not only will a bus contention result in the loss of information,
but it also may damage the electronic circuitry,
Special buffer circuits may be added to boost the bus signals
sufficiently for transmission over several additional feet of
conductor length,or for distribution to many other chips,
c) What’ s the function of the buffer circuits?
2009-7-27 P,8
( )1) Data within a register is available in parallel because
each bit exits in the register on the same conductor.
( )2) After any digital data is transferred to the destination
registers,the source register is erased.
( )3) As long as all registers in a system are linked to one
central control unit and the circuit has been designed
properly,bus contentions should never occur.
( )4) Now it is not possible to integrate all the necessary
circuitry for a computer on a single chip.
( )5) Amplifiers may be added to the destination register,
Read and Judge
End
F
F
T
T
F
2009-7-27 P,9
Directions:Read the following short passage,Complete it by filling in the missing words.
A,flow B,temperature C,movable D,conductivity E,ratio
F,inverse G,potential H,resistance I,mass J,proportional
All conductors contain 1)____ electric charges which will move
when an electric 2)___ difference (measured in volts) is applied
across separate points on a wire (etc) made from the material,This
3)____ of charge (measured in amperes) is what is meant by electric
current,In most materials,the amount of current is 4)____ to the
voltage (Ohm's Law) provided the 5)____ remains constant and the
material remains in the same shape and state,The 6)____ between
the voltage and the current is called the resistance (measured in
ohms) of the object between the points where the voltage was
applied,The 7)____ across a standard 8)____ (and shape) of a
material at a given temperature is called the resistivity of the material,
The 9)____ of resistance and resistivity is conductance and 10)____,
Read and Complete
End
C
G
A
J
B
E
H I
F D
2009-7-27 P,10
Read and Translate
Directions:Put the following sentences into English,using the words or phrases given.
End
As long as you log on this website,you can capture
the related information easily.
Staying in the position of a leader,he often experiences the
conflict between duty and desire,
The railway traverses the country in another 5 years,
The fact was proved that the reform and opening could boost
the development of economy in China.
So far,none of the countries in the world can make the
distribution of wealth even,
1)只要你登陆这个网站，就能轻松获取有关的信息。
（ capture）
2)处于领导者的地位，他经常体会到责任与欲望之间的冲突。 (conflict)
3)再过 5年，这条铁路将横贯全国。
4)事实证明，改革开放能推动中国的经济发展。
（ boost）
5)目前，世界上还没有哪个国家能够做到平均地分配财富的。（ distribution）
2009-7-27 P,11
Multiple Transfer Objects Strategy
Some application business objects can be very complex,In such
cases,it is possible that a single business object produces
different Transfer Objects,depending on the client request,There
exists a one-to-many(一对多的 )relationship between the business
object and the many Transfer Objects it can produce,In these
circumstances,this strategy(策略 )may be considered.
For instance,when the business object is implemented as a
session bean(会话 bean),typically applying the Session Fa?ade(外表 )pattern,the bean may interact with numerous other business
components to provide the service,The session bean produces its
Transfer Object from different sources,Similarly,when the
Business Object is implemented as a coarse-grained(粗糙的 )entity
bean,typically applying the Composite Entity(复合实体 ) pattern,the
entity bean will have complex relationships with a number of
dependent objects,In both these cases,it is good practice to
provide mechanisms(机械设备 )to produce Transfer Objects that
actually represent parts of the underlying(潜在的 )coarse-grained
components.
&Part4 Extensive Reading
2009-7-27 P,12
For example,in a trading application,a Composite Entity that
represents a customer portfolio(组合 )can be a very coarse-grained,
complex component that can produce Transfer Objects that provide
data for parts of the portfolio,like customer information,lists of
stocks held,and so on,A similar example is a customer manager
session bean that provides services by interacting with a number of
other Business Objects and components to provide its service,The
customer manager bean can produce discrete(离散的 ) small Transfer
Objects,like customer address,contact list,and so on,to represent
parts of its model.
For both these scenarios(情况 ),it is possible to adopt and apply the
Multiple Transfer Objects Strategy so that the business component,
whether a session bean or an entity bean,can create multiple types
of Transfer Objects,In this strategy,the business entity provides
various methods to get different Transfer Objects,Each such
method creates and returns a different type of Transfer Object,
End
2009-7-27 P,13
@Part5 Notes to Passage
1)There exists a one-to-many relationship between the business
object and the many Transfer Objects it can produce,该业务对象以及由之而产生的许多传输对象之间，存在着一种“一对多的”
关系。
注释,这是一个由,There +be+名词词组 +状语”构成的表示“存在”
概念的句子，除了 be 外，某些表示存在概念的不及物动词如 exist,
remain,happen,occur,come,rise,stand,lie,live等也能用于这种 there-存在句。句中的 it can produce是定语从句，修饰 the
many Transfer Objects；注意 it指代的是前面所提到的 the
business object。
2009-7-27 P,14
2） When the business object is implemented as a session bean,
typically applying the Session Facade pattern,the bean may
interact with numerous other business components to provide
the service,一旦采用会话外观模式使业务对象成为一个会话 bean，那么，这个会话 bean就可以与为数众多的其它业务组件进行交互,从而提供服务。
注释,一个 session bean 代表着一个 J2EE服务器中的用户。为了要访问部署在服务器上的应用,客户端要调用 session bean的方法。
Session Bean 通过执行服务器内部的企业级任务，把客户端和复杂的内部实现分离开来，并完成客户端给予的任务。如它的名字所显示的，
一个 Session Bean就像一个交互式 session(interactive session)。一个 Session Bean是不能够共享使用的，它仅仅能够为一个客户端。同样，一个 interactive session也只能一个客户端使用。和交互式
session一样，一个 Session Bean是不持久的 (数据并没有保存到数据库中 )。当一个客户端终止会话后，它的 Session Bean也将终止，不再和客户端连接；此外,该句中的 typically applying the Session
Facade pattern是现在分词短语充当方式状语；不定式短语 to provide
the service也是状语，表示结果。
2009-7-27 P,15
3） In a trading application,a Composite Entity that
represents a customer portfolio can be a very coarse-
grained,complex component that can produce Transfer
Objects that provide data for parts of the portfolio,like
customer information,lists of stocks held,and so on,在实际交易中，代表某一客户组合的复合实体是一个非常粗糙而复杂的组件，它能够产生为部分客户组合提供数据的传输对象，如客户信息、所持股票清单等。
注释,此句含有三个定语从句。第一个是 that represents a
customer portfolio，修饰主语 a Composite Entity；第二个是
that can produce Transfer Objects，修饰先行词 component；
第三个是 that provide data for parts of the portfolio，修饰
Transfer Objects。
2009-7-27 P,16 End
4） For both these scenarios,it is possible to adopt and
apply the Multiple Transfer Objects Strategy so that the
business component,whether a session bean or an
entity bean,can create multiple types of Transfer
Objects,对于以上两种情形，可以采用多传输对象策略，这样，无论这种业务组件是会话 bean还是实体 bean，都能产生出多种传输对象。
注释,不定式 to adopt and apply the Multiple Transfer
Objects Strategy是该句的主语； so that引出结果状语从句；
whether a session bean or an entity bean相当于 whether
it is a session bean or an entity bean，表让步。
2009-7-27 P,17
1.Listening Challenge
Spot Dictation
Directions,The following passage will be heard 3 times,During the second time,you
are required to put the missing words or phrases in the numbered blanks according to
what you hear,The third time is for you to check your answers,Now the passage
begins.
The entity merges 1)__________ values into its own stored values when it receives a
mutable Transfer Object from a 2)__________,However,the entity must handle the
situation where two or more clients simultaneously request 3)__________ updates to
the entity's values,Allowing such updates may result in data conflicts,Version
control is one way of 4)___________ such conflict,As one of its 5)___________,the
entity can include a version number or a last-modified time 6)_________,The
version number or time stamp is copied over from the entity bean into the Transfer
Object,An update transaction can 7)__________ conflicts using the time stamp or
version number attribute,If a client holding a stale Transfer Object tries to update
the entity,the entity can 8)_________ the stale version number or time stamp in the
Transfer Object and inform the client of this error condition,The client then has to
9)__________ the latest Transfer Object and retry the update,In extreme cases this
can result in client starvation-the client might never 10)______________ its updates.
@Part6 Practice on Passage
End
modified
client
conflicting
avoiding attributes
stamp
resolve
detect
obtain
accomplish
2009-7-27 P,18
End of this Unit
Unit 12
Data Transfer in Digital Circuits
Chapter Three
&Part4 Extensive Reading@ Part 1 Notes to Text
@Part5 Notes to Passage& Part 2 Word Study
@Part3 Practice on Text @Part6 Practice on Passage
2009-7-27 P,2
@ Part 1 Notes to Text
1)Data is typically grouped into packets that are either 8,16,or 32
bits long,and passed between temporary holding units called
registers.人们通常（或往往）将数据打包，使之形成不是 8,16位，就是 32位长的数据包。这样一来，数据便可以在被称作寄存器的临时贮存单元之间进行传递。
注释,该句可视为并列复合句；第一分句中包含了定语从句 that are
either 8,16,or 32 bits long；注意副词 typically，原意为“代表性地,
作为特色地”，但此处则表示“通常，往往”的意思；第二分句
passed between temporary holding units called registers中由于主语和谓语中的助动词与第一分句的完全相同，故被省略。
2） To transfer data from one register to another,the output
conductors of one register are switched onto a channel of parallel
wires referred to as a bus,为了在不同的寄存器中传输数据，寄存器的输出导线可与谓之总线的平行线信道相连接。
注释,该句是个简单句，谓语采用了被动形式；不定式 To transfer data
from one register to another 显然是目的状语； referred to as a bus
是过去分词短语作定语，修饰 parallel wires，相当于一个定语从句
which are referred to as a bus。
Data Transfer in Digital Circuits
2009-7-27 P,3
3） It is important to note that after any digital data transfer,the
source and destination registers are equal; the source register
is not erased when the data is sent,需要注意的是，在数据被传输后，源寄存器和目标寄存器中的数据是同等的，源寄存器并不会因此而被删除。
注释,此句是 It is + adj,+ to do sth.句型。 it是形式主语，不定式是真正的主语； that引导的从句充当 note的宾语。该宾语从句中包含了两个时间状语从句；分别是 after any digital data transfer和 when
the data is sent；两个并列的分句，分别是,the source and
destination registers are equal和 the source register is not
erased。
4） Not only will a bus contention result in the loss of
information,but it also may damage the electronic circuitry,总线竟用不仅会造成信息的丢失，而且还会对电子电路系统造成损害。
注释,Not only……,but also……,不但 …… 而且 ……,,是表示递进关系的句型。因为句子以表示否定意义的 not开头，所以前半部分要用部分倒装的语序。
2009-7-27 P,4
5） Bus signals that exit microprocessor chips and other
VLSI circuitry are electrically capable of traversing about
one foot of conductor on a printed circuit board,if many
devices are connected to it,如果有许多设备与同一印刷电路板相连，微处理器芯片中的总线信号以及它 VLSI电路系统中的总线信号就能以电子的形式通过印刷电路板上大约一英尺长的导线。
注释,此句是复合句。主句的主要结构是“主语（ Bus
signals） +谓语（ are） +表语（ capable of… ）”；定语从句
that exit microprocessor chips and other VLSI circuitry修饰主语； if引导条件状语从句。
End
2009-7-27 P,5 End
1,capture v,获取 10.traverse v,经过；通过
2,content n,内容 11.susceptible adj,敏感的
3,erase v,删除 12.distortion n,失真
4,conflict n,冲突 13.environment n,环境
5,contention n,竞争 14.pin n,管脚
6,circuitry n,电路，电路系统 15.amplifier n,信号增强器
7,half-duplex channels n,半双工信道 16.buffer n,缓冲
8,integrated circuit 集成电路 17.boost v,推进
9,chip n,芯片 18.distribution n,分配
& Part 2 Word Study
2009-7-27 P,6
Task 1,Listening training
Dictation of some key words
Directions,You will hear some key words twice,most of which are taken from
the Word Study,Then finish the Crossword Puzzle,(See you book p,)
2,Dictation of some key expressions
Directions,You will hear some key expressions twice,most of which are
taken from this text,Then you are asked to complete the missing words.
@Part3 Practice on Text
1) temporary________________
2) _______________conductors
3) _______________parallel wires
4) in the _______________register
5) a central_______________
6) external____________________
holding units
the output
a channel of
destination
control unit
noise and distortion
2009-7-27 P,7
Read and Reply
Directions:Students are required to read aloud the whole text after
the teacher,Then give short answers to the following questions:
a) How can data be transferred from one register to another?
b) What’ s the result of a bus contention?
Task 2,Read,Write and Translate
The output conductors of one register are switched onto a
channel of parallel wires referred to as a bus,The input
conductors of another register,which is also connected to the
bus,
Not only will a bus contention result in the loss of information,
but it also may damage the electronic circuitry,
Special buffer circuits may be added to boost the bus signals
sufficiently for transmission over several additional feet of
conductor length,or for distribution to many other chips,
c) What’ s the function of the buffer circuits?
2009-7-27 P,8
( )1) Data within a register is available in parallel because
each bit exits in the register on the same conductor.
( )2) After any digital data is transferred to the destination
registers,the source register is erased.
( )3) As long as all registers in a system are linked to one
central control unit and the circuit has been designed
properly,bus contentions should never occur.
( )4) Now it is not possible to integrate all the necessary
circuitry for a computer on a single chip.
( )5) Amplifiers may be added to the destination register,
Read and Judge
End
F
F
T
T
F
2009-7-27 P,9
Directions:Read the following short passage,Complete it by filling in the missing words.
A,flow B,temperature C,movable D,conductivity E,ratio
F,inverse G,potential H,resistance I,mass J,proportional
All conductors contain 1)____ electric charges which will move
when an electric 2)___ difference (measured in volts) is applied
across separate points on a wire (etc) made from the material,This
3)____ of charge (measured in amperes) is what is meant by electric
current,In most materials,the amount of current is 4)____ to the
voltage (Ohm's Law) provided the 5)____ remains constant and the
material remains in the same shape and state,The 6)____ between
the voltage and the current is called the resistance (measured in
ohms) of the object between the points where the voltage was
applied,The 7)____ across a standard 8)____ (and shape) of a
material at a given temperature is called the resistivity of the material,
The 9)____ of resistance and resistivity is conductance and 10)____,
Read and Complete
End
C
G
A
J
B
E
H I
F D
2009-7-27 P,10
Read and Translate
Directions:Put the following sentences into English,using the words or phrases given.
End
As long as you log on this website,you can capture
the related information easily.
Staying in the position of a leader,he often experiences the
conflict between duty and desire,
The railway traverses the country in another 5 years,
The fact was proved that the reform and opening could boost
the development of economy in China.
So far,none of the countries in the world can make the
distribution of wealth even,
1)只要你登陆这个网站，就能轻松获取有关的信息。
（ capture）
2)处于领导者的地位，他经常体会到责任与欲望之间的冲突。 (conflict)
3)再过 5年，这条铁路将横贯全国。
4)事实证明，改革开放能推动中国的经济发展。
（ boost）
5)目前，世界上还没有哪个国家能够做到平均地分配财富的。（ distribution）
2009-7-27 P,11
Multiple Transfer Objects Strategy
Some application business objects can be very complex,In such
cases,it is possible that a single business object produces
different Transfer Objects,depending on the client request,There
exists a one-to-many(一对多的 )relationship between the business
object and the many Transfer Objects it can produce,In these
circumstances,this strategy(策略 )may be considered.
For instance,when the business object is implemented as a
session bean(会话 bean),typically applying the Session Fa?ade(外表 )pattern,the bean may interact with numerous other business
components to provide the service,The session bean produces its
Transfer Object from different sources,Similarly,when the
Business Object is implemented as a coarse-grained(粗糙的 )entity
bean,typically applying the Composite Entity(复合实体 ) pattern,the
entity bean will have complex relationships with a number of
dependent objects,In both these cases,it is good practice to
provide mechanisms(机械设备 )to produce Transfer Objects that
actually represent parts of the underlying(潜在的 )coarse-grained
components.
&Part4 Extensive Reading
2009-7-27 P,12
For example,in a trading application,a Composite Entity that
represents a customer portfolio(组合 )can be a very coarse-grained,
complex component that can produce Transfer Objects that provide
data for parts of the portfolio,like customer information,lists of
stocks held,and so on,A similar example is a customer manager
session bean that provides services by interacting with a number of
other Business Objects and components to provide its service,The
customer manager bean can produce discrete(离散的 ) small Transfer
Objects,like customer address,contact list,and so on,to represent
parts of its model.
For both these scenarios(情况 ),it is possible to adopt and apply the
Multiple Transfer Objects Strategy so that the business component,
whether a session bean or an entity bean,can create multiple types
of Transfer Objects,In this strategy,the business entity provides
various methods to get different Transfer Objects,Each such
method creates and returns a different type of Transfer Object,
End
2009-7-27 P,13
@Part5 Notes to Passage
1)There exists a one-to-many relationship between the business
object and the many Transfer Objects it can produce,该业务对象以及由之而产生的许多传输对象之间，存在着一种“一对多的”
关系。
注释,这是一个由,There +be+名词词组 +状语”构成的表示“存在”
概念的句子，除了 be 外，某些表示存在概念的不及物动词如 exist,
remain,happen,occur,come,rise,stand,lie,live等也能用于这种 there-存在句。句中的 it can produce是定语从句，修饰 the
many Transfer Objects；注意 it指代的是前面所提到的 the
business object。
2009-7-27 P,14
2） When the business object is implemented as a session bean,
typically applying the Session Facade pattern,the bean may
interact with numerous other business components to provide
the service,一旦采用会话外观模式使业务对象成为一个会话 bean，那么，这个会话 bean就可以与为数众多的其它业务组件进行交互,从而提供服务。
注释,一个 session bean 代表着一个 J2EE服务器中的用户。为了要访问部署在服务器上的应用,客户端要调用 session bean的方法。
Session Bean 通过执行服务器内部的企业级任务，把客户端和复杂的内部实现分离开来，并完成客户端给予的任务。如它的名字所显示的，
一个 Session Bean就像一个交互式 session(interactive session)。一个 Session Bean是不能够共享使用的，它仅仅能够为一个客户端。同样，一个 interactive session也只能一个客户端使用。和交互式
session一样，一个 Session Bean是不持久的 (数据并没有保存到数据库中 )。当一个客户端终止会话后，它的 Session Bean也将终止，不再和客户端连接；此外,该句中的 typically applying the Session
Facade pattern是现在分词短语充当方式状语；不定式短语 to provide
the service也是状语，表示结果。
2009-7-27 P,15
3） In a trading application,a Composite Entity that
represents a customer portfolio can be a very coarse-
grained,complex component that can produce Transfer
Objects that provide data for parts of the portfolio,like
customer information,lists of stocks held,and so on,在实际交易中，代表某一客户组合的复合实体是一个非常粗糙而复杂的组件，它能够产生为部分客户组合提供数据的传输对象，如客户信息、所持股票清单等。
注释,此句含有三个定语从句。第一个是 that represents a
customer portfolio，修饰主语 a Composite Entity；第二个是
that can produce Transfer Objects，修饰先行词 component；
第三个是 that provide data for parts of the portfolio，修饰
Transfer Objects。
2009-7-27 P,16 End
4） For both these scenarios,it is possible to adopt and
apply the Multiple Transfer Objects Strategy so that the
business component,whether a session bean or an
entity bean,can create multiple types of Transfer
Objects,对于以上两种情形，可以采用多传输对象策略，这样，无论这种业务组件是会话 bean还是实体 bean，都能产生出多种传输对象。
注释,不定式 to adopt and apply the Multiple Transfer
Objects Strategy是该句的主语； so that引出结果状语从句；
whether a session bean or an entity bean相当于 whether
it is a session bean or an entity bean，表让步。
2009-7-27 P,17
1.Listening Challenge
Spot Dictation
Directions,The following passage will be heard 3 times,During the second time,you
are required to put the missing words or phrases in the numbered blanks according to
what you hear,The third time is for you to check your answers,Now the passage
begins.
The entity merges 1)__________ values into its own stored values when it receives a
mutable Transfer Object from a 2)__________,However,the entity must handle the
situation where two or more clients simultaneously request 3)__________ updates to
the entity's values,Allowing such updates may result in data conflicts,Version
control is one way of 4)___________ such conflict,As one of its 5)___________,the
entity can include a version number or a last-modified time 6)_________,The
version number or time stamp is copied over from the entity bean into the Transfer
Object,An update transaction can 7)__________ conflicts using the time stamp or
version number attribute,If a client holding a stale Transfer Object tries to update
the entity,the entity can 8)_________ the stale version number or time stamp in the
Transfer Object and inform the client of this error condition,The client then has to
9)__________ the latest Transfer Object and retry the update,In extreme cases this
can result in client starvation-the client might never 10)______________ its updates.
@Part6 Practice on Passage
End
modified
client
conflicting
avoiding attributes
stamp
resolve
detect
obtain
accomplish
2009-7-27 P,18
End of this Unit
