Clearly this is not optimal in terms of performance!
显然，就性能而言这不是最优的。
This is a carry over from JDBC 1.0 and is expensive in terms of performance.
这是从JDBC 1.0继承下来的，并要付出高昂的性能代价。
Each network round trip to the database server is expensive in terms of performance.
每个从网络到数据库服务器的往返行程从性能角度来看是昂贵的。
Each network round trip to the database server is expensive in terms of performance.
每个从网络到数据库服务器的往返行程从性能角度来看是昂贵的。
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