"ij" - Client Tool to Create New Databases

JDBC Tutorials - Herong's Tutorial Examples

∟Installing and Running Java DB - Derby

∟"ij" - Client Tool to Create New Databases

This section describes how to use the command line tool 'ij' to create a new database with a new table.

"ij" is a command line client tool included in the Java DB package. You can use "ij" to run any SQL statements on the Java DB server. "ij" uses the JDBC driver to connect to the Java DB server with the "connect" command in this format:

connect 'jdbc:derby://<host>:<port>/<database>';
   Create a new database and connect to that database

connect 'jdbc:derby://<host>:<port>/<database>;create=true';
   Connect to an existing database

Here is how I used "ij" to create a new database and a new table. Open another command line window and run the following commands:

(on Windows)
herong> %DERBY_HOME%\bin\ij

(on Linux or macOS)
herong> $DERBY_HOME/bin/ij
ij version 10.15

ij> connect 'jdbc:derby://localhost/TestDB;create=true';

ij> CREATE TABLE TestTable (ID INT, Name VARCHAR(20));
0 rows inserted/updated/deleted

ij> INSERT INTO TestTable VALUES (1, 'Herong');
1 row inserted/updated/deleted

ij> SELECT * FROM TestTable;
ID         |NAME
--------------------------------
1          |Herong

1 row selected
ij> quit;

When I look at my Derby database directory, lib\javadb\databases\ or lib/javadb/databases, I see a sub-directory called, "TestDB", which represents the database instance I created with the "connect" command.

Cool. Now I have the Java DB server running, and I know how to run SQL statements to store and query data with the "ij" tool.

Table of Contents

About This Book

JDBC (Java Database Connectivity) Introduction

JDK (Java SE) Installation

►Installing and Running Java DB - Derby

Downloading and Installing Java DB (Derby)

Java DB (Derby) in the JDK 1.8 Package

Downloading Java DB (Derby) Documents

"sysinfo" - Checking Java DB (Derby) Installation

Setting Up Java DB (Derby) in Network Server

►"ij" - Client Tool to Create New Databases

Derby (Java DB) JDBC Driver

Derby (Java DB) JDBC DataSource Objects

Java DB (Derby) - DML Statements

Java DB (Derby) - ResultSet Objects of Queries

Java DB (Derby) - PreparedStatement

MySQL Installation on Windows

MySQL JDBC Driver (MySQL Connector/J)

MySQL - PreparedStatement

MySQL - Reference Implementation of JdbcRowSet

MySQL - JBDC CallableStatement

MySQL CLOB (Character Large Object) - TEXT

MySQL BLOB (Binary Large Object) - BLOB

Oracle Express Edition Installation on Windows

Oracle JDBC Drivers

Oracle - Reference Implementation of JdbcRowSet

Oracle - PreparedStatement

Oracle - JBDC CallableStatement

Oracle CLOB (Character Large Object) - TEXT

Oracle BLOB (Binary Large Object) - BLOB

Microsoft SQL Server Express Edition

Microsoft JDBC Driver for SQL Server

Microsoft JDBC Driver - Query Statements and Result Sets

Microsoft JDBC Driver - DatabaseMetaData Object

Microsoft JDBC Driver - DDL Statements

Microsoft JDBC Driver - DML Statements

SQL Server - PreparedStatement

SQL Server CLOB (Character Large Object) - TEXT

SQL Server BLOB (Binary Large Object) - BLOB

JDBC-ODBC Bridge Driver - sun.jdbc.odbc.JdbcOdbcDriver

JDBC-ODBC Bridge Driver - Flat Text Files

JDBC-ODBC Bridge Driver - MS Access

JDBC-ODBC Bridge Driver - MS SQL Server

Summary of JDBC Drivers and Database Servers

Using Connection Pool with JDBC

Archived Tutorials

Full Version in PDF/EPUB