JDBC Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

JDBC Interview Questions

Questions Answers Views Company eMail

what is the difference between SENSITIVE and INSENSITIVE?

1 9151

what is the best way, in terms of performance, to do multiple insert/update statements, a PreparedStatement or Batch Updates?

2 4662

what is JDBC?

Wipro,

3 7562

how can we connect to db without using getConnection() method

4 7672

how many JDBC drivers ?name them?

CTS, Idea,

6 12681

what happens if connection is not closed?

CTS,

7 25181

Hi my doubt is that preparedStatement is a interface means which has no implemenation.plz go thru the code below String sql = "SELECT * FROM movies WHERE year_made = ?"; prest = con.prepareStatement(sql); prest.setInt(1,2002); ResultSet rs1 = prest.executeQuery(); Now setInt and executeQuery how it works since it is interface it does not have implementation how it works, how executeQuery returns result from database as executequery method has no implementation even in Statement interface.

Cybermate, Hexaware,

4 9675

HI ALL, How to Overcome "OutOfMemoryException"? when I am compiling source having more than 1000 LOC throwing this exception. Can any one give correct answer to my question? thx

5 6874

How to create Connection interface object because it is Interface , Interface is not instansiated?

Aptech, CTS, HCL,

9 19218

java based application for hospital management

3833

What is in Hibernate? How exactly inheritance of Object to Tables can be done? What is the benefits of discriminator?

AppLabs,

1 7481

how can connection with oracle10g with java

IonIdea,

3 12257

What is connection pooling? What Method and class used for Connection pooling in Java?

2 7696

what happen if we set JDBC string to NULL?

Sapient,

3396

any one can explain about policy file rule? when i connect database with applet then ther is no compile time error but the run time error is occureed.i.e access is denied.policy file rule is related to this problem.

2307

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Un-Answered Questions { JDBC }

What is batch processing and how to perform batch processing in jdbc?

932

What does connection pooling mean ?

998

What is the difference between jdbc and jndi?

1010

Is it possible to connect to multiple databases simultaneously?

1069

Does sql allow null values ?

973

Is jdbc connection secure?

952

What is jndi lookup?

934

What are clob and blob data types in jdbc?

1040

Explain the life cycle of jdbc.

1039

What are the factors that the jdbc driver performance depends upon?

973

How to retrieve warnings in jdbc?

994

Which interface is responsible for transaction management in jdbc?

1023

What is sqlwarning and discuss the procedure of retrieving warnings?

1031

Is jdbc object oriented?

943

What is data source in java?

961

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