sudhir kumar

• Oct 20th, 2005

 

I want the answer of this quetion

kecai

 Profile Answers by kecai 

• Oct 26th, 2005

 

1. JDBC connects to DB through Driver

2. When we use a Driver, we need to do 3 things:

  a) Load driver class;

  b) Create instance of it;

  c) Register it into DriverManager.

  But in real life, it's very luck that we can realize these in ONE step:

  Class.forName("Your.Driver.Class");

3. Then we can use conn=DriverManager.getConnection("DB.URL")

  to get "connection" belong to the Driver.

4. Next, Statement = conn.createStatement(SQLofTableX);

SO, diff. driver has diff. conn; diff. conn has diff. statement; diff. SQL for diff. table. Every thing is unique.

kecai

 Profile Answers by kecai 

• Oct 26th, 2005

 

One more ways is :

DriverManager.getDriver(DB.URL)

kecai

 Profile Answers by kecai 

• Oct 26th, 2005

 

AND, The DriverManager attempts to select an appropriate driver from the set of registered JDBC drivers