What isolation level is used by the DBMS when inserting, updating and selecting rows from a database?

JDBC Interview Questions and Answers

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What isolation level is used by the DBMS when inserting, updating and selecting rows from a database?

The answer depends on both your code and the DBMS. If the program does not explicitly set the isolation level, the DBMS default is used. You can determine the default using DatabaseMetaData.getDefaultTransactionIsolation() and the level for the current Connection with Connection.getTransactionIsolation(). If the default is not appropriate for your transaction, change it with Connection.setTransactionIsolation(int level).

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Other Interview Questions

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• Are all the required JDBC drivers to establish connectivity to my database part of the JDK?
• Is the JDBC-ODBC Bridge multi-threaded?
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• What is an SQL Locator?
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• What is the JDBC syntax for using a literal or variable in a standard Statement?
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