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Driver - Responsible for determining whether a given JDBC URL is valid for the concerned database and registers itself with the DriverManager class.
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PreparedStatement - A SQL statement is pre-compiled and stored in a PreparedStatement object. This object can then be used to efficiently execute this statement multiple times.
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ResultSet - It provides access to a table of data generated by executing a Statement. The table rows are retrieved in sequence. Within a row its column values can be accessed in any order. A ResultSet maintains a cursor pointing to its current row of data. Initially the cursor is positioned before the first row. The 'next' method moves the cursor to the next row.
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