how to get started with apache derby javadb
Apache Derby, also known as JavaDB, is an open-source relational database management system (RDBMS) that is written in Java. It is a lightweight and embeddable database that can be used for development, testing, and production.
Here's how to get started with Apache Derby (JavaDB):
- Download and install Apache Derby
You can download the latest version of Apache Derby from the Apache website. Choose the appropriate version for your operating system, and then follow the installation instructions.
- Set up the environment
After installing Apache Derby, you need to set up the environment. Here's an example for setting up the environment on Windows:
- Set the
DERBY_HOMEenvironment variable to the directory where Apache Derby is installed. For example,
- Start the Derby Network Server
Before using Derby, you need to start the Derby Network Server. You can start the Network Server by running the
startNetworkServer.bat (Windows) or
startNetworkServer (Linux) script in the
bin directory of your Derby installation.
- Create a database
After starting the Derby Network Server, you can create a new database using the
ij tool. The
ij tool is a command-line tool that allows you to interact with Derby using SQL commands.
To create a new database, open a command prompt or terminal and run the following command:
ij> connect 'jdbc:derby://localhost:1527/mydb;create=true';
This command connects to the Derby Network Server and creates a new database called
- Use the database
After creating the database, you can use it by running SQL commands. Here's an example:
ij> create table my_table (id int primary key, name varchar(50)); ij> insert into my_table values (1, 'John'); ij> select * from my_table;
This example creates a new table called
my_table with two columns (
name). It then inserts a new row into the table and retrieves all the rows in the table.
These are the basic steps to get started with Apache Derby (JavaDB). There are many more features and options that you can explore as you become more familiar with the database.