The first step of configuring a DataAdapter is to select:
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an adapter object.
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a connection object.
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a database object.
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a dataset object.
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None of the above.
To solve this question, the user needs to have knowledge about the concepts related to configuring a DataAdapter in data access programming.
The first step of configuring a DataAdapter is to select a connection object.
Now, let's go through each option and explain why it is right or wrong:
A. an adapter object: This option is incorrect because selecting an adapter object is not the first step in configuring a DataAdapter. The adapter object is created and configured after selecting a connection object.
B. a connection object: This option is correct. The first step in configuring a DataAdapter is to select a connection object. The connection object represents the connection to the database and is used to establish a connection with the database.
C. a database object: This option is incorrect because selecting a database object is not the first step in configuring a DataAdapter. The database object is typically used after establishing a connection to the database.
D. a dataset object: This option is incorrect because selecting a dataset object is not the first step in configuring a DataAdapter. The dataset object is used to hold the retrieved data from the database and is typically configured after selecting a connection object.
E. None of the above: This option is incorrect because the correct answer is option B - a connection object.
Therefore, the correct answer is: B
The first step is selecting a connection object. A DataAdapter (e.g., ADO.NET's SqlDataAdapter/OleDbDataAdapter) needs an open connection to the database before it can build its SelectCommand and other commands; the wizard/configuration process starts by choosing (or creating) the Connection, then proceeds to define the query and generate the adapter's commands. You can't pick a dataset (that's the in-memory result container, populated afterward), a generic "database object" (not a .NET API concept here), or the adapter itself (that's what you're configuring) before establishing the connection.