You are designing a SharePoint 2010 information architecture plan for a client that specifies the mechanics of
implementing content type change control. The requirements for the change control plan specify that:
Site managers can create site-specific content types based on the content types in the parent site.
.Content types must not be overwritten when changes are made to parent site content types.
.Site managers can change child site content types.
You need to specify a content type change control plan that meets all these requirements.
Which approach should you recommend?
A.
Direct the site manager to explicitly set the read-only property of the content type to true. Direct the site
collection manager to make the specified change required in the child site to the content type at the site collection level.
B.
Direct the site manager to explicitly set the read-only property of the content type to true. Perform a push-down
operation from the parent site to overwrite the required changes to the read-only content types in all the child sites.
C.
Define the content type as read-only at the child site level. Direct the site manager to explicitly set the readonly
property of the content type to false to make changes to the content type. Then change the read-only property to true.
D.
Define the content type as sealed. Direct the site manager to explicitly set the sealed property of the content
type to false to make changes to the content type. Then change the sealed property of the content type to true.
http://msdn.microsoft.com/en-us/library/office/ms434692%28v=office.14%29.aspx
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Thanks Boo for sharing very useful link.
http://msdn.microsoft.com/en-us/library/office/ms434692%28v=office.14%29.aspx
Link Details:
You can prevent users from making changes to specific content types in two ways, by using read-only content types and sealed content types. Each method has its advantages.
However, you cannot prevent users from creating content types based on a specific site content type.
Read-only Content Types:
You can define the content type as read-only. Marking a content type as read-only warns users that they should not make changes to the content type. The user must then explicitly set the read-only property of the content type to false to make changes to the content type.
Sealed Content Types:
For more stringent control of the content type, you can define the content type as sealed. You cannot change sealed content types through the Microsoft SharePoint Foundation 2010 user interface, and you must be a site collection administrator to unseal the content type using the object model.
Sealed content types are not updated through push-down operations
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