Answer / kavita sharma

Object identity: when two things are refers to an instance
of object.

object Equivalence: when two things refer two instances with
same vale

when i want to use asp.net configuration for creat users and roles i recived this message: There is a problem with your selected data store. This can be caused by an invalid server name or credentials, or by insufficient permission. It can also be caused by the role manager feature not being enabled. Click the button below to be redirected to a page where you can choose a new data store. The following message may help in diagnosing the problem: Unable to connect to SQL Server database. when i clicked the choose data source button that give me another message that is this: Use this page to configure how Web site management data such as membership is stored. You can use a single provider for all the management data for your site or you can specify a different provider for each feature. Your application is currently configured to use the provider: AspNetSqlProvider Select a single provider for all site management data Select a different provider for each feature (advanced) ------------------------- and this message was reapeted in other choose again. please help me if u know why i gave that message so i wont can creat my users and roles

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