PostgreSQL JDBC

In this section on PostgreSQL JDBC, you’ll learn the process of interacting with the PostgreSQL databases from Java programs using the JDBC driver.

JDBC, as the core API of Java, offers a standardized interface for communication with SQL-compliant databases, especially PostgreSQL.

What you’ll learn

• Install JDK, setup Java IDE, and download PostgreSQL JDBC driver
• Connect to the PostgreSQL server from Java programs.
• Perform common database operations such as creating tables, inserting data, querying data, updating data, and deleting data.
• Call PostgreSQL stored functions and stored procedures.
• Handle Transactions.

Prerequisites

• Basic Java programming.
• Know how to connect to PostgreSQL using psql and execute queries.

Section 1. Getting Started

This section helps you get started by setting up JDK, installing Java IDE, downloading the PostgreSQL JDBC driver, and connecting to the PostgreSQL server from a Java program.

• Connecting to the PostgreSQL database server – Show you how to connect to the PostgreSQL database server from a Java program.

Section 2. Performing Common Database Operations

This section shows you how to perform common database operations including creating tables, inserting data, querying data, updating data, and deleting data.

• Creating Tables – Learn how to create tables in the PostgreSQL database using JDBC.
• Inserting Data – Guide you on how to insert one or more rows into a table.
• Querying Data – Walk you through the steps for querying data from a table.
• Updating Data – Provide you with the steps for updating existing data in a table.
• Deleting Data – Show you how to delete one or more rows from a table.

Section 3. Calling stored functions & stored procedures

This section guides you on how to call stored functions and stored procedures in PostgreSQL from Java programs.

• Calling PostgreSQL stored functions – Guide you on how to call PostgreSQL stored functions including built-in and user-defined stored functions.

Section 4. Handling Transactions

This section explores how to manage PostgreSQL transactions in a Java program.

• Handling database transactions – Show you how to manage PostgreSQL transactions in Java.