How do I disallow NULL values in a table?


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More JDBC Interview Questions

Is it possible to connect to multiple databases simultaneously? Using single statement can one update or extract data from multiple databases?

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Define preparedstatement.

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Write an sql to find all records having all numeric characters in a field ?

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What is jdbc odbc in java?

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How does a custom RowSetReader get called from a CachedRowSet?

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How to use JDBC to connect Microsoft Access?

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What is the difference between execute, executeQuery, executeUpdate?

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How many rowset are available in jdbc?

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What is phantom read and which isolation level prevents it?

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How do I receive a ResultSet from a stored procedure?

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When does the result for an sql statement return null?

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Give a way to check that all result sets have bin accessed and update counts are generated by execute method.

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