Throughout the book, we will be using several key terms describing the various data objects employed by MCMS. They can be broadly classified under two categories:
Containers for holding logical groupings of objects
Objects, which can be postings (pages), page resources, templates, and even users
The diagram below shows the relationship between containers and objects.
Channels are like folders in Windows Explorer. They organize postings and other sub-channels in very much the same way files are organized in folders. Usually, the channel hierarchy determines the URL of the web page, but we will find out about exceptions to this in Chapter 5.
In MCMS, channels are represented by this icon: 
In MCMS, a posting is a web page, but not your traditional web page of course. Postings are assembled on the fly by piecing together data stored in the database and the template file.
Postings are represented by this icon: 
Resource galleries store resources (and other sub-resource galleries). This is the icon that represents a resource gallery: 
Resources are objects that are inserted into a posting. These can be anything from images or Word documents to plain text documents. MCMS stores resources as BLOBs in the content repository.
MCMS does not have a particular icon for resources. The icon used to represent a resource depends on its file type.
Template galleries store templates (and other sub-template galleries). In MCMS, they are represented by this icon: 
Templates shape the content stored in the content management system and are used by authors to generate postings (web pages) that have the same form and shape. In MCMS, they are represented by this icon: 
Rights groups are logical groupings of users. In MCMS, there are eight different types of rights groups, each corresponding to one of the following roles: administrators, channel managers, template designers, resource managers, moderators, editors, authors, and subscribers. Unlike other container type objects, rights groups can't be nested. You can, however, assign both NT/Active Directory (AD) users and NT/AD groups to a rights group.
