Java JDBC (Java DB Connectivity)

Java JDBC (Java Database Connectivity) is an application programming interface (API) for the Java programming language that provides a way to connect to & interact with databases.

Java JDBC enables Java programs to execute SQL statements and retrieve data from databases.

There are four types of JDBC drivers:

  1. JDBC-ODBC Bridge Driver: This driver provides JDBC access via an ODBC driver. It’s the first type of JDBC driver developed and is now considered outdated.
  2. Native-API Driver: This driver uses the client-side libraries of the database management system.
  3. Network Protocol Driver (Middleware Driver): This driver translates JDBC calls into a DBMS-independent network protocol, which is then translated to a DBMS-specific protocol by a server component.
  4. Thin Driver (Type 4 Driver): This is a pure Java driver that converts JDBC calls directly into the vendor-specific database protocol.

Here is a simple example of a Java program that uses JDBC to connect to a database and retrieve information about a car:

In this example, we use the Class.forName method to load the JDBC driver, the DriverManager.getConnection method to establish a connection to the database, the createStatement method to create a Statement object, and the executeQuery method to execute a SELECT statement and retrieve the result set. We then use the ResultSet class to iterate through the rows of the result set and retrieve the values of the columns.

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