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JDBC Interview Questions
Questions Answers Views Company eMail

How can we disable a constraint ?

 557

Does sql allow null values ? Can we use it within where clause ?

 503

Write an sql to find all records having all numeric characters in a field ?

 485

Explain the difference between inner and outer join ?

 509

What are temp tables ?

 526

What is database deadlock ?

 533

What should be done for auto generating primary key id in a table ?

 519

Can we have foreign key reference to a non primary key column ?

 522

What's the benefit for specifying constraints like not null, primary key explicitly instead of specifying it against the column ?

 473

If you are given a choice to implement the code to either insert a record or update if already exist, which approach will you follow ?

 568

What is database deadlock ? How can we avoid them?

 506

Describe the steps needed to execute a sql query using jdbc.

 541

Which constraint cannot be specified as an explicit constraint and should be specified with the column only ?

 482

What is jdbc? Describe the steps needed to execute a sql query using jdbc.

 493

Does sql allow null values ?

 542

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Un-Answered Questions { JDBC }

Which of the attributes in the monitoring tab for a jdbc connection pool in the administrative console tell us how many clients are currently waiting for a connection?

513

What are the packages are used in jdbc?

564

Explain the locking system in jdbc?

530

What is odbc. how is it related to sql cli?

596

What is a jdbc connection pool?

503




What is jdbc databasemetadata interface?

542

Describe how the jdbc application works.

519

Can I set up a connection pool with multiple user IDs? The single ID we are forced to use causes problems when debugging the DBMS.

515

What are the new features added to JDBC 4.0?

531

What does the connection object represents?

551

What causes no suitable driver error?

533

What is device controller?

509

What is new in JDBC 2.0?

568

How to know howmuch data is truncated?

1911

What is a jdbc connection?

466

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