Introduction
In
this blog we will know how to delete records from database using JDBC (Java
Database Connectivity) in the console window.
Here
we use Type-1 driver (JDBC-ODBC bridge)
Creation of dsn(database source name) for Oracle
Start-Control
panel- Administrative Tools- Data Sources (ODBC)-go to system DSN tab-click add
button-select a driver for which you want to set up a data source (for Oracle-
Oracle in XE)-select it and click finish-give any name in the data source name
textbox-then click ok button.
Note:
- Here Username=system, Password=pintu and DSN name=dsn1
Table Creation
Create
table employee (empno int,empname varchar(50),sal int)
Example:- To delete record from a table
-
- import java.sql.*;
- import java.util.*;
- public class delete {
- public static void main(String args[]) throws Exception {
- Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
- Scanner sc = new Scanner(System.in);
- Connection con = DriverManager.getConnection("jdbc:odbc:dsn1", "system", "pintu");
- Statement stmt = con.createStatement();
- System.out.print("Enter lower limit salary: ");
- int lb = sc.nextInt();
- System.out.print("Enter upper limit salary: ");
- int ub = sc.nextInt();
- String sql = "delete from employee where sal between " + lb + " and " + ub;
- int no = stmt.executeUpdate(sql);
- System.out.println(no + " Records Successfully Deleted...");
- con.close();
- }
- }
Compile
Javac
delete.java
Java
delete