blocks|key|241640|text|框架类库是整个.NET框架安装中包含的所有内容。这包括ADO.NET、ASP.NET、WPF、Windows+Forms等。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|241641|基类库是框架的主要核心部分，它允许公共语言运行库正常运行。这将包括系统名称空间、核心类型等。|241642|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

The Framework Class Library is everything included in the entire .NET framework installation. This includes ADO.NET, ASP.NET, WPF, Windows Forms, etc.

The Base Class Library is the main core part of the framework, which allows the Common Language Runtime to operate properly. This would include the System namespace, core types, etc.

blocks|key|4573430|text|​|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4573431|📷|atomic|offset|length|4573432|4573433|如果你看上图，你会看到拼箱和拼箱的完全不同。|4573434|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/3b66b9c561fa5fddbac2d99c0cef867f.jpeg|imageAlt^0|0|0|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@$E|U|F|V|1|W]]|A|$]]|$1|G|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

<img src="https://i.stack.imgur.com/U9Tju.jpg" alt="The Image describes the exact difference between BCL and FCL">

If you look at the image above, you will see the exact difference between BCL and FCL

blocks|key|4573179|text|按照你要求的顺序，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4573180|4573181|不，数据库连接和实体框架与标准的内容字符串/流/文件/等是分开的。BCL.|unordered-list-item|offset|length|4573182|FCL中的所有内容都是您链接到的图中的内容。整个交易。|4573183|4573184|@Scott+-来自您发布的文本|4573185|基类库(+Base+Class+Libraries，BCL)充当任何.NET语言的标准运行时，并提供表示内部|4573186|、集合、流、字符串操作、基本文件访问等的类型。|blockquote|4573187|4573188|FCL中剩下的类专注于特定的功能领域，例如提供数据库访问。|style|BOLD|4573189|4573190|对我来说，这意味着FCL是整体，而BCL是其中的一部分，但你可能会有不同的理解。|4573191|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/netframework/aa569603.aspx^0|0|0|X|3|0|0|0|0|0|0|0|0|7|M|0|0|0|14|0^^$0|@$1|2|3|4|5|6|7|17|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|18|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|19|8|@]|9|@$F|1A|G|1B|1|1C]]|A|$]]|$1|H|3|I|5|E|7|1D|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|1F|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|1G|8|@]|9|@]|A|$]]|$1|O|3|P|5|Q|7|1H|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1J|8|@$F|1K|G|1L|U|V]]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]|$1|X|3|Y|5|6|7|1N|8|@$F|1O|G|1P|U|V]]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]]|10|$11|$5|12|13|14|A|$15|16]]]]

In kind of the order you asked, 

<ul>
<li>No, database connectivity and the entity framework are seperate from the standard stuff String/Stream/File/etc in the <a href="http://msdn.microsoft.com/en-us/netframework/aa569603.aspx" rel="nofollow noreferrer">BCL</a>.</li>
<li>FCL is everything in the figure you linked to. The whole deal. </li>
</ul>

@Scott - 
From the text you posted 

<blockquote>
 "The Base Class Libraries (BCL) serve
 as the standard runtime for any .NET
 language and provide types that
 represent the intrinsic CLR rtpes,
 collections, streams, string
 manipulation, basic file access, etc.
 
 The remaining classes in the FCL are
 focused on specific functional areas,
 such as provding database access."
</blockquote>

To me this means that the FCL is the whole, and the BCL is part of it, but maybe you read that differently.

blocks|key|1543615|text|基类库(又称BCL+)是一组类，用于使框架本身和虚拟机(即执行代码的运行时)运行。它是.NET框架的基础设施。BCL是ECMA-335+standard的一部分。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1543616|框架类库是使用BCL执行其特定工作的附加库。|1543617|entityMap|0|LINK|mutability|MUTABLE|url|http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-335.pdf^0|1N|H|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

The Base Class Library aka BCL is a set of classes that is used to get the framework itself and the virtual machine, that is the runtime that executes the code, running. It is the infrastructure for the .NET Framework. The BCL is part of the <a href="http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-335.pdf" rel="nofollow noreferrer">ECMA-335 standard</a>.

The Framework class libraries are additional libraries that use the BCL to do their specific job.

blocks|key|1541560|text|框架类库只是.NET框架的一个组件，类似于|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1541561|的类库、C%2B%2B标准模板库、微软的活动模板库、微软的基础类、Borland的对象视窗库(OWL)和许多其他的类库。|blockquote|1541562|1541563|它是一组丰富的可重用类型，允许您通过简化许多常见的编程任务来实现高水平的开发人员生产力。|1541564|基类库(BCL)充当任何.NET语言的标准运行时，并提供表示内部CLR、集合、流、字符串操作、基本文件访问等的类型。|1541565|FCL中的其余类专注于特定的功能领域，例如提供数据库访问。|1541566|1541567|因此，简而言之，在安装.NET框架时安装的所有“高级”类都是框架类库的一部分，但不一定是基类库的一部分。具体地说，ADO.NET类不是BCL的一部分，但它们是FCL的一部分。|1541568|至于为什么FCL没有显示在Wikipedia上的参考图中，很可能是因为在视觉上传达FCL不是一个单一的物理“东西”而是由多个组件组成的事实并不总是容易的。|1541569|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$]]|$1|E|3|-4|5|6|7|U|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|V|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|W|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|X|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|Z|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

<blockquote>
 The Framework Class Library (FCL) is
 just one component of the .NET
 Framework and is similar to Java's
 class libraries, the C++ Standard
 Template Library (STL), Microsoft's
 Active Template Library (ATL), the
 Microsoft Foundation Classes (MFC),
 Borland's Object Windows Library (OWL)
 and many others.
 
 It is a rich set of reusable types
 allowing you to achieve a high level
 of developer productivity by
 simplyfying many common programming
 tasks.
 
 The Base Class Libraries (BCL) serve
 as the standard runtime for any .NET
 language and provide types that
 represent the intrinsic CLR rtpes,
 collections, streams, string
 manipulation, basic file access, etc.
 
 The remaining classes in the FCL are
 focused on specific functional areas,
 such as provding database access.
</blockquote>

So, in short, all of the "higher-level" classes you use that are installed when you install the .NET Framework are part of the Framework Class Library but not necessarily part of the Base Class Library. Specifically, the ADO.NET classes are not part of the BCL but they are part of the FCL.

As to why the FCL isn't shown in the referenced figure on Wikipedia is most likely due to the fact that it isn't always easy to visually convey the fact that the FCL isn't a single physical "thing" but rather it is made up of multiple components.

blocks|key|241694|text|基类库是框架类库(插图中的.NET框架堆栈)的一部分，可以在任何类型的应用程序中使用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|241695|上面的部分取决于您正在制作的应用程序的类型。如果您创建的应用程序没有数据库连接，则不需要任何ADO.NET库。如果您创建了一个web应用程序，则不需要winforms库。|241696|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

The Base Class Library is the part of the Framework Class Library (the .NET Framework Stack in the illustration) that you can use in any type of application.

The parts above that is depending on the type of application that you are making. If you make an application without database connectivity, you don't have any use for the ADO.NET libraries. If you make a web application, you have no use for the winforms libraries.

blocks|key|1543706|text|类库是类的集合，它包括如下类:数据访问，如ADO.NET，XML支持，目录服务，正则表达式，查询支持。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1543707|.NET框架中的基类库非常庞大。它涵盖了诸如Collection+like、System.Collection、System.Threading、System.CodeDom、System.IO、System.Reflection、System.Security等领域。|1543708|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Class Library is a collection of class's. It includes classes for: Data Access like ADO.NET,XML Support, Directory Services, Regular Experssions, Querying Support.

The Base Class library in the .NET Framework is huge. It covers areas such as Collection like, System.Collection, System.Threading, System.CodeDom, System.IO, System.Reflection, System.Security.

Is <a href="http://en.wikipedia.org/wiki/ADO.NET" rel="nofollow noreferrer">ADO.NET</a> and ASP.NET a part of <a href="http://en.wikipedia.org/wiki/File:DotNet.svg" rel="nofollow noreferrer">Base Class Library</a>? The information given in wikipedia looks ambiguous to me. In the <a href="http://en.wikipedia.org/wiki/File:DotNet.svg" rel="nofollow noreferrer">figure</a>, it is shown as a separate block. What is the difference between Base Class Library(BCL) and Framework Class Library(FCL)? Is FCL as a part of .NET Framework? If so why is FCL not shown in the <a href="http://en.wikipedia.org/wiki/File:DotNet.svg" rel="nofollow noreferrer">figure</a> as part of .NET framework?

Got confused!!

Confused about Base class library and Framework Class Library

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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和ASP.NET是的一部分吗？维基百科给出的信息在我看来是模棱两可的。在中，它显示为一个单独的块。基类库(BCL)和框架类库(FCL)有什么区别？FCL是.NET框架的一部分吗？如果是这样的话，为什么FCL没有作为.NET框架的一部分显示在中？弄糊涂了！

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