A Web application is an IIS Web site that is created and used by SharePoint Products and Technologies. Each Web application is represented by a different Web site in IIS. Whenever a new Web application is created, a new content database will be created. By default (unless specified during creation) site collections created in the Web application will be placed in the Web application database.
Site = Web = SPWeb aka sub web
A site is a collection of lists, libraries, and pages. Whenever you create a new site, a template for the site must be chosen. The templates available out of the box will differ depending on the SharePoint version that is installed. Sites are sometimes referred to as 'webs' also.
Site Collection = SPSite = Portal = Sometimes referred to as a 'Top Level Site'
A site collection is a set of Web sites that have the same owner and share administration settings. Each site collection contains a top-level Web site and can contain one or more subsites. In short, a site collection is a 'container' that holds sites or webs.
In the Office SharePoint Server, the actual "page" is a item a WSS list and the framework knows how to assemble these. This list has columns that are bound to three field controls (title, picture, article). Re-using SharePoint lists for data storage lets us build on existing and new WSS list features like content types, check-in/out, versioning, per item security, workflow and more. In edit mode, the field controls place constraints on the author for what content they can put in the "page".
Master pages in SharePoint work the same as they do in traditional ASP.NET applications. They allow designers to control almost all aspects of the overall layout of a SharePoint site. Master pages can be thought of as the glue that holds all of the SharePoint functionality together. In fact every SharePoint site will have a master page, whether it is custom or one of the out-of-the-box master pages. When a designer creates a custom master page, they are typically trying to make a SharePoint site look less like it does out of the box and more like a company’s specific brand.
Master pages are stored in the master page gallery of a SharePoint site. They can be added to the master page gallery either directly from either SharePoint Designer or the SharePoint Web interface, or they can be deployed via a Feature.
Master pages are applied to an Office SharePoint Server site via the Master Page settings menu located from the Site Settings of the SharePoint Web interface. One really nice thing about this menu is that it allows the administrator to apply a master page not only to the current site, but to all sub sites below it. Along with this manual method, master pages can also be applied to SharePoint sites via custom Features. Master pages can also be applied to Windows SharePoint Services sites. Like Office SharePoint Server sites, the master page is stored in the master page gallery. Unlike Office SharePoint Server, changing the master page can only be done through a custom solution.
SharePoint themes are different from ASP.NET themes; they are used specifically to change the colors, fonts, and some of the images that are used in SharePoint sites. Unlike master pages though, they cannot be used to move SharePoint elements or change the layout of the page. They are created entirely with CSS and images and cannot use any custom ASP.NET code.
SharePoint themes are typically added by manually logging into the physical server and copying the various files (images, CSS, and XML) to several folders in the 12 directory. They are applied from the Site Settings menu in the SharePoint Web interface.
For more information on creating SharePoint themes, refer to the following articles:
Site Master Page vs. System Master Page
By default the following rule applies:
You cannot change the default behavior - but you can use SharePoint Designer to change the master page assignment for individual pages if required.
If you open a page in SharePoint Designer you can see a Master Page File setting which can be modified:
Master Pages vs. Themes
While both master pages and SharePoint themes can apply branding to a SharePoint site, they differ in a few key ways. The following table highlights these differences.
A site template is a file that dictates the overall look and feel of a site. It includes all of the design information about a site, such as:
Site templates do not include the following items:
A content type is a reusable collection of settings you want to apply to a certain category of content. Content types enable you to manage the metadata and behaviors of a document or item type in a centralized, reusable way.
A content type is an object that defines several elements of a piece of content, including:
Additionally, content type can include the following information:
Only available in Office SharePoint Server sites, page layouts provide yet another means for designers to style the content of a SharePoint site. While master pages provide a unified outer shell design for a SharePoint site, page layouts define the specific look and the editable data for various types of pages. They allow another level of granularity by allowing the same type of data to be shown in different ways, like an article page or a welcome page, while still utilizing the same master page. Page layouts are created in SharePoint Designer and are based on SharePoint content types and site columns. From an administrative standpoint they are added to Office SharePoint Server sites in a similar fashion to master pages. They are also stored in the Master Page Gallery and can, like master pages, can be added from SharePoint Designer, the SharePoint Web interface, or deployed via SharePoint Features.
Page layouts help dictate the overall look and feel of a Web page. A page layout relies on a content type to determine the kind of content that can be stored on pages that use the page layout. Content for the page is stored in fields on the page. When you view or edit a page, the content is displayed in field controls. When you create a page layout, you add field controls using a Windows SharePoint Services-compatible Web authoring tool, such as Microsoft Office SharePoint Designer 2007.
The types of fields on a page are determined by the content type for the page. Each content type contains columns that correspond to the fields on the page. When you create a content type, you add column templates to the content type for each field. Column templates determine the default field control that is associated with the columns as well as the kind of content the field can contain, such as a single line of text, a hyperlink, or a picture.
Content types for page layouts are based on the Page content type and contain the columns for the fields that can be used on pages based on the page layout. The Page content type is a system content type template created by the Publishing Resources feature. The column templates from Page will be added to all Pages libraries created by the Publishing feature.
By default, the Page content type contains a number of columns that page layouts require. The following table describes a sample of these default columns.
Features and Solution Files (.wsp files)
Features and Solutions are an important concept for administrators to understand. They can make the management and maintenance of a farm much easier when used together. Features provide the ability to define a piece of functionality that can be turned on and off at a given scope, such as the site collection, site, or Web application. Solutions provide the ability to package and install a feature much like a Windows .msi file, and have one installation and deployment point for all servers in the farm. The deployments can be scheduled and whenever new servers are added to the farm, the existing solutions are automatically deployed to the new server. Developing functionality as Features and deploying them as Solutions is the recommend deployment strategy for SharePoint customizations.
For more information on the benefits of using solutions and features, refer to the following: