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J D B C Driver Type Comparison   

JDBC Driver Type Comparison
Category Type 1 Type 2 Type 3 Type 4
Basic Description JDBC to ODBC Bridge JDBC using Native Methods Middleware JDBC Drivers Pure Java Driver
Requires native install on client Yes Yes No No
Cross platform No Mostly Yes Yes
Supports specific DB features e.g. OracleBlob No Yes Usually No Yes
Requires additional server No No Yes No

Sun has the following to say about driver types -


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