Li Guoliang » 计算机英语 http://liguoliang.com ActionScript Flex Java JEE PHP... Mon, 21 May 2012 17:04:30 +0000 en hourly 1 http://wordpress.org/?v=3.3.2 <<企业应用架构模式[影印版]>>笔记整理 http://liguoliang.com/2008/%e4%bc%81%e4%b8%9a%e5%ba%94%e7%94%a8%e6%9e%b6%e6%9e%84%e6%a8%a1%e5%bc%8f%e5%bd%b1%e5%8d%b0%e7%89%88%e7%ac%94%e8%ae%b0%e6%95%b4%e7%90%86/ http://liguoliang.com/2008/%e4%bc%81%e4%b8%9a%e5%ba%94%e7%94%a8%e6%9e%b6%e6%9e%84%e6%a8%a1%e5%bc%8f%e5%bd%b1%e5%8d%b0%e7%89%88%e7%ac%94%e8%ae%b0%e6%95%b4%e7%90%86/#comments Tue, 18 Nov 2008 15:20:39 +0000 Guoliang http://liguoliang.com/2008/11/571/

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]]> 书很好, 层次清晰, 语言简练. 只是我英语太差, 读的稍稍有些吃力. 把自己理解的记录一下, 即便是错误的, 也先记录下来.

1. Domain

这个是最困惑我的一个词语.
一般来讲, Domain指一个领域, 譬如Product, Student. 用户的需求一般为Domain, 用户需求中的名词多为Class, 用户需求的限制多为逻辑.

2.Unit of Work

Unit of Work有两个要素:
1. 有多个Work

2. 多个Work同一个Transation, 全部成功或全部失败.

3. Indentity Map

将从DataBase中读取出来的对象放在一个Map中, 需要使用对象时, 先检查Map中是否存在, 不存在的情况下才去从DataBase读取.

4. Qury Object

用Object来代替SQL, EJB SQL语句, 可以增加Cache以及时间控制等

5. MetaData Mapping

Knowledge Level’s Knowledge Level.

例如, 一个Table中的某个Record 是一个 Operation Level, 则对应Column为该Record的Knowledge Level, 而该Column的属性描述,则为MetaData.

6.Service Layer

通过使用Service Layer来划分软件层次, 达到降低耦合的要求.

每个Layer不必提供过多服务, 而应当提供恰当的服务, 以降低开发,维护的复杂度. 类似与日常生活中组织机构的管理.一般来说,可以以此通过Project, Source Folder, Package, Class来划分Service Layer.

…..

这本书太高深了, 只能高山仰止了…

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]]> http://liguoliang.com/2008/%e4%bc%81%e4%b8%9a%e5%ba%94%e7%94%a8%e6%9e%b6%e6%9e%84%e6%a8%a1%e5%bc%8f%e5%bd%b1%e5%8d%b0%e7%89%88%e7%ac%94%e8%ae%b0%e6%95%b4%e7%90%86/feed/ 0 从简单词汇开始理解ERWin:Attribute, Entity, Logical Model, Physical Model, Domain, Cardinality http://liguoliang.com/2008/%e4%bb%8e%e7%ae%80%e5%8d%95%e8%af%8d%e6%b1%87%e5%bc%80%e5%a7%8b%e7%90%86%e8%a7%a3erwinattribute-entity-logical-model-physical-model-domain-cardinality/ http://liguoliang.com/2008/%e4%bb%8e%e7%ae%80%e5%8d%95%e8%af%8d%e6%b1%87%e5%bc%80%e5%a7%8b%e7%90%86%e8%a7%a3erwinattribute-entity-logical-model-physical-model-domain-cardinality/#comments Mon, 17 Nov 2008 15:04:59 +0000 Guoliang http://liguoliang.com/2008/11/554/ More...

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]]> 1. Attribute : [普] 属性, 品质, 特征

Represents[表现,描绘] a type of characteristic or property with a set of real or abstract things(People, Places, Events and so on);
个人理解: Attribute对应着数据库中的Column, 对应OOP中的Propertie

2. Entity: [普] 实体

An Entity represents a set of real or abstract things(People, Places, Event and so on) that have common attributes or characteristics.
个人理解: Entity对应着数据库中的Table, 在OOP端, 则对应着一个Class.

3. Logic Model\Physical Model: [普] 逻辑模型\物理模型

由于数据库厂商实在太多, 如MS SQL, MySQL, DB2, Oracle等, 在DataType, SQL语句, 命名原则方面, 各有不同,
在设计数据库时也许要考虑到日后数据库的更换, 着眼于长远,我们需要设计一个与具体厂商无关的Model,, 这便是Logic Model.

同时又需要设计一个具体的Model, 这个Model直接与某个厂商某个数据库版本相适应, 这便是Physical Model

4. Domain, Cardinality

…待续…

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]]> 摘自: <<进了外企再学英语>>

Starting:

1. I am writing to confirm/enquire/inform you….
确认/询问/通知
2. I am writing to follow up on our earlier decision on the marketing campaign in Q2
我写信来追踪先前我们对于第二季度营销活动的决定.

Starting a reference

3. With reference to our telephone conversation today…
4. In my previous e-mail on October 5…
5. As I metioned earlier about…
6. As indicated in my previous e-mail…
7. As we discussed on the phone…
8.From our decision at the previous meeting…
9. As you requested/Per your requirement…按照你的要求
10. In reply to your e-mail dated April 1, we decided…
11. This is in response to your e-mail today.
12. As mentioned before, we deem this product has strong unique selling points in China.
13. As a follow-up to our phone conversation yesterday, I wanted to get back to you about the pending issues of our agreement. Pending:未解决的.
14. I received your voice message regarding the subject. I’m wondering if you can elaborate i.e.provide more details. 
elaborate
adj.
精心制作的, 详细阐述的, 精细
vt.
精心制作, 详细阐述
v.
详细描述

Giving infomation

15. Please be advised/informed that…
16. Please note that..
17. We would like to inform you that…
18. I am convinced that…
19. We agree with you on …
20. With effect from 4 Oct.,2008…从2008年10月4日开始生效
21. We will have a meeting scheduled as noted below…
22. Be assured that individual statistics are not disclosed and this is for internal use only.

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