Execute SQL statements

If connection is established properly with the Apache Derby, you can now execute simple sequel statements from your command prompt ij tool as shown below

Creating tables using ij tool

ij> create table table_name(roll_no int, first_name varchar(10), last_name varchar(10));

Inserting values into the table

ij> insert into table_name values (197878,’jack’,'Samurai’);

ij> insert into table_name values (197823,’Corsa’,'Neo’);

ij> insert into table_name values (197823,’Corsa’,'Morpheus’);

Updating values in a table

ij> update table_name set roll_no=197776, first_name=’Bruce’ where roll_no=197878;

View the Table

ij> select * from table_name;

ij> select * from table_name where roll_no=197776;

Goto command prompt by keying on cmd from Run application launcher.

Goto your java classpath and give the below command

> java org.apache.derby.tools.ij

Now your command prompt would change as shown below

ij>

Note: you may get errors if classpath is not set correctly

Connecting to the database

Connect to the database by giving the below command in the Derby ij tool

ij> connect ‘jdbc:derby:SampleTest;create=true’;

Install Apache Derby from the below link

http://db.apache.org/derby/derby_downloads.html

“db-derby-10.5.1.1-bin.zip”

Go to Command Prompt by clicking start button and selecting RUN option.

Type cmd in the Run window to open the command prompt.

SET Derby INSTALL using the below command

> set DERBY_INSTALL=D:\Program Files\Java\db-derby-10.5.1.1-bin

Configure Apache Derby

To configure Apache Derby in embedded mode connect derby jars to the classpath

derby.jar: contains the Drive for JDBC engine

derbytools.jar: this is a optional jar which installs a tool called ‘ij’ which is used to query to our  databases

Set the classpath with the below command

> SET CLASSPATH=%DERBY_INSTALL%\lib\derby.jar;%DERBY_INSTALL%\lib\derbytools.jar;.

Test Apache Derby

To test the Apache Derby installation give the below command in the command prompt

> java org.apache.derby.tools.sysinfo