Is possible to open a connection to a database with exclusive mode with JDBC?
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Why “no suitable driver” error occurs?
When does the result for an sql statement return null?
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What is the fastest type of JDBC driver?
Statement, PrepareStatement and Callable all these are interfaces. Thought it is a interface how come we are creating objects and calling methods("preparestatement()") in it. In which class this method is defined. Please let me know. Thanks in advance. example: PreparedStatement pre = con.prepareStatement( "UPDATE COFFEES SET SALES = ? WHERE COF_NAME LIKE ?");
What is two-phase commit in the database?
What is the difference between triggers and procedures?
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Differentiate between a statement and a preparedstatement.
Core Java 
