Updating the database using dataset and dataadapter
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These two objects have different roles: Data Sets are designed to be a mini-in-memory database whereas a Data Reader is designed to be a ferry of data between the database layer and a . There's the Sql Connection, Sql Command, Sql Data Adapter, and Sql Data Reader classes for working with the Sql Client provider; there's the Ole Db Connection, Ole Db Command, Ole Db Data Adapter, and Ole Db Data Reader classes for working with the Ole Db provider.
Objects that are prefixed by a provider name (Sql, Ole Db, Oracle, Odbc, etc.) are provider-specific objects.
While these types of Data Sets still suffer from the performance issues noted in this article, they are much preferred to loosely-typed Data Sets.
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Instead, a Data Reader is limited to accessing the records in sequential order, from the first one to the last one, one record at a time.
NET applications, sticking with the good ol' Data Reader instead.
Since then I have received a number of emails from attendees asking me why I don't use Data Sets.
Understandably, it cannot ferry information back from the database after the connection has been severed.
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Furthermore, a Data Reader is limited to being read-only and forward-only.' Establish Connection Dim my Connection as New Sql Connection(connection string) my Connection.
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