Illustrate jdbc, JAVA Programming

Assignment Help:

 

JDBC stands for Java Database Connectivity:

It is an API which gives easy connection to a wide range of databases. To connect to a database we have to load the appropriate driver and then request for a connection object. The Class.forName(....) will prepare the driver and register it with the DriverManager.

Class.forName("oracle.jdbc.driver.OracleDriver"); //dynamic class loading

String url = jdbc:oracle:thin:@hostname:1526:myDB;

Connection myConnection = DriverManager.getConnection(url, "username", "password");

 

The DataSource interface gives an alternative to the DriverManager for building a connection. DataSource builds the code more portable than DriverManager because it works with JNDI and it is prepared, managed and deployed separately from the application that uses it. If the DataSource location modifies, then there is no need to modify the code but change the configuration properties in the server. This gives your application code easier to maintain. DataSource allows the need of connection pooling and support for distributed transactions. A DataSource is not only a database but also may be a spreadsheet or a file. A DataSource object may be bound to JNDI and an application can find and use it to prepare a connection to the database. J2EE application servers give tools to describe your DataSource with a JNDI name. When the server initialize it loads all the DataSources into the application server's JNDI service.

DataSource configuration properties are given below:

1. JNDI Name  jdbc/myDataSource

2. URL jdbc:oracle:thin:@hostname:1526:myDB

3. Password, serName

4. Implementation classname  oracle.jdbc.pool.OracleConnectionPoolDataSource

5. Classpath  ora_jdbc.jar

6. Connection pooling settings as illustrate maximum pool size, minimum pool size, connection timeout, statement cache size etc.

Once the DataSource has been set up, then you may get the connection object as given:

Context ctx = new InitialContext();

DataSource ds = (DataSource)ctx.lookup("jdbc/myDataSource"); Connection myConnection = ds.getConnection("username","password");

 

 

 

1995_Illustrate JDBC.png


Related Discussions:- Illustrate jdbc

Need graphic designer and developer, My name is Myers, the project director...

My name is Myers, the project director of an online business that is scheduled to commence this summer in Nigeria. We are in the process of recruiting members to the project team a

Dropbox calendar, code in dropbox calendar and loop for feruary leapyear

code in dropbox calendar and loop for feruary leapyear

Java and Arrays, AskWrite an application that uses an Array to store 10mess...

AskWrite an application that uses an Array to store 10messages of type String. You will store this Array with 10 messages of your choosing. For example, a message could be “I love

XML File Homework, I need help on java homework. Is it possible to know the...

I need help on java homework. Is it possible to know the shortest possible time to get the solution before giving my commitment

What content issues is happened in java language, What Content Issues is ha...

What Content Issues is happened in java language? Some people claim in which Java is insecure since it can show the user erotic pictures and play flatulent noises. By this stan

Program of bug simulation , You will be creating a World that consists of ...

You will be creating a World that consists of ants and doodlebugs. Each time you click the board each bug will do some of the following: move, bread, eat, and starve. Ants will

Develop a school java project, Develop a School java project Project Des...

Develop a School java project Project Description: Programming java, threads. Not so hard but requires knowledgeSkills required: Java

What is asynchronous messaging, What is asynchronous messaging? Queue An...

What is asynchronous messaging? Queue Ans) Asynchronous messaging includes a client that does not wait for a message from the server. An event is used to trigger a message from

What is spring configuration file, Spring configuration file is an XML file...

Spring configuration file is an XML file. This file having the classes information and defines how these classes are configured and introduced to each other.

Program to abstract syntax tree constructed, Please submit your answers    ...

Please submit your answers     In this homework, we are going to generate Java Virtual Machine codes by processing the abstract syntax tree constructed from the parsing process

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd