A group consists of a set of users. A group can contain individual users, other groups, or the users in a particular role or territory. It can also contain the users in a particular role or territory plus all the users below that role or territory in the hierarchy.

There are two types of groups.

Public groups
Administrators and… Read more

A group consists of a set of users. A group can contain individual users, other groups, or the users in a particular role or territory. It can also contain the users in a particular role or territory plus all the users below that role or territory in the hierarchy.

There are two types of groups.

Public groups
Administrators and… Read more

http://blog.jeffdouglas.com/2010/05/07/using-exernal-id-fields-in-salesforce/

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actionFunction : provides support for invoking controller action methods directly from JavaScript code using an AJAXrequest.Used when we need to perform similar action on various events. Even though you can use it in place of action Support as well where only event is related to only one control.

ActionPoller : A timer that sends an AJAX update… Read more