a .net data provider is a collection of objects used to communicate between a data source and a data set in other words a data provider is used to communicate with a data source i e database execute commands against the data source and then retrieve results from the data source
By default, the work item file attachment size limit is 2,048 kilobytes (2 MB). For information on how to change the attachment size limit, see How to: Set the Maximum Attachment Size for Work Items. Consider the implications carefully before changing the default attachment size limit. Changing the attachment limit value will alter the attachment size limit for all Team Foundation Server users.
Have you ever wondered just how many email addresses Outlook can hold in each of the To, CC & BCC fields? There is a limit to how many you can input in each field and this limit is based on the size of the contacts rather than the actual number of contacts in the field. The size cannot exceed 29 KB. This limit applies when the members of the distribution list are selected from your Contacts folder and entered as full email addresses.