creating jdbc connection
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This document discusses JDBC and how to connect to a database using JDBC in Java. It first defines JDBC as a standard Java API that provides database connectivity. It then describes the four types of JDBC drivers: JDBC-ODBC bridge, JDBC-Native bridge, JDBC-Net bridge, and direct JDBC driver. The document outlines the five steps to connect to a database using JDBC: register the driver class, create a connection object, create a statement object, execute queries, and close the connection.
creating jdbc connection
- 1. GANDHINGAR INSTITUTE OF TECHNOLOGY INFORMATION TECHNOLOGY DEPARTMENT ADVANCED JAVA CREATING JDBC CONNECTION Enrollment no: 150120116047 Name: Prince Paneliya Guided By: Prof. Prashant Jani
- 2. What is JDBC? JDBC provides Java applications with access to most database systems via SQl. JDBC acronomy of java database connectivity through Sun Microsystems claims that it is not the full form. JDBC is a standard java API for independence database connection between a java program and wide range of relational database.
- 3. Database Connectivity Before APIs like JDBC and ODBC, database connectivity was tedious Each database vendor provided a function library for accessing their database The connectivity library was proprietary. If the database vendor changed for the application, the data access portions had to be rewritten
- 4. Types of JDBC Drivers There are four types of jDBC Drivers. Type 1 - JDBC-ODBC Bridge Type 2 - JDBC-Native Bridge Type 3 - JDBC-Net Bridge Type 4 - Direct JDBC Driver
- 5. JDBC-ODBC Bridge It runs only on platforms where ODBC is available ODBC must be configured separately The JDBC-ODBC bridge driver uses ODBC driver to connect to the database. The JDBC-ODBC bridge driver converts JDBC method calls into the ODBC function calls. Jdbc api Java application Jdbc- odbc driver Odbc driver DataB ase Vendor databa se
- 6. JDBC Native Bridge The Native API driver uses the client-side libraries of the database. The driver converts JDBC method calls into native calls of the database API Java application Jdbc api Native Api driver Vendor database DataBase
- 7. JDBC-Net Bridge The Network Protocol driver uses middleware that converts JDBC calls directly or indirectly into the vendor- specific database protocol. It is fully written in java. Java Application Network Protocol layer Middleware Databas e JDBC Api
- 8. Direct JDBC Driver The thin driver converts JDBC calls directly into the vendor-specific database protocol. That is why it is known as thin driver. It is fully written in Java language. Java Application JDBC Api Thin driver Database
- 9. steps to connect JDBC connection There are five steps to connect java application with the database in java using JDBC. 1. Register the Driver class. 2. Create the connection object. 3. Create the statement object. 4. Execute the query. 5. Close the connection.
- 10. The forName() method of Class class is used to register the driver class. This method is used to dynamically load the driver. syntax:- Class.forName(“mysql.jdbc.driver. mysqldriver”);
- 11. The getConnection() method of DriverManager class is used to establish connection with the database. Syntax :- Connection con = DriverManager.getConnection(“jd bc:mysql://localhost:dbname”,”roo t”,”password”)
- 12. The createStatement() method of Connection interface is used to create statement. The object of statement is responsible to execute queries with the database. Syntax:- Statement stmt=con.createStatement();
- 13. The executeQuery() method of Statement interface is used to execute queries to the database. This method returns the object of ResultSet that can be used to get all the records of a table. Syntax:- ResultSet rs = stmt.ExecuteQuery(“select * from table”); While(rs.next()){ System.out.println(“rs.getInt(1)+“ ”+rs.getString(“name”) ); }
- 14. By closing connection object statement and ResultSet will be closed automatically. The close() method of Connection interface is used to close the connection. Syntax:- con.close();
- 15. Thank you
Editor's Notes
- #3: JDBC provides Java applications with access to most database systems via SQL