ij

This display may seem awkward, but the run command executes your script file as if you were typing the commands directly into the ij tool.

One of the things ij enables you to do is to control the overall database system and the connection to the database.

As shown in Listing 7, to insert data into a table, you first need to start the ij tool and connect to your database.

This connection URL should look familiar -- it's exactly what you used in previous articles when issuing a connect command in the ij tool.

derby is the name of the JDBC driver class that the ij tool can use to communicate with the database server.

In this case, you supply the name of the script file as a command-line argument to the ij tool.

jdbc is the mechanism with which the ij tool communicates with the database server.

The script ends with an exit command that terminates the connection to the database and allows the ij tool to exit gracefully.

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You could use the Derby ij command line to enter the SQL commands directly, or you could use a graphical SQL tool.

The ij tool can be used to connect to and issue commands to a database.

Finally, you used metadata about the query results to print nicely formatted query results in a manner similar to the Apache Derby ij tool.

To begin, start the ij tool, and connect to a database, as shown in Listing 1.

You can also make more than one connection to a database with the ij tool, as shown in Listing 4.

Finally, to tell the ij tool to process your command, you must add a semicolon (because ij is a Java tool) and press Return.

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Doing so adds the four library files to your project classpath and gives you access to the ij command-line prompt.

The JDBC connection URL to connect to a Cloudscape database is shown using ij in the console of Eclipse.

After you find the IJ, switch to a large-caliber needle with a 12 ml syringe repeat this step.

The next step is to create the updateable ResultSet, which is the equivalent of using the GET CURSOR command within the ij tool.

In Listing 9, the insert script is executed by redirecting the standard input of the ij tool to read from the script file.

To run the clean ups scripts, use ij, the interactive SQL scripting tool, present as ij.

After your environment is set up properly, you can run the ij tool to create a new directory, as shown in Listing 1.

After you've initialized a demo database, you can use the Apache Derby ij tool to connect to the test database and issue SQL commands.

Now let's look at a complete example that shows how to set your class path to run ij, the Derby SQL scripting tool.

There is yet another way to run a Derby script: redirect the standard input of the ij tool to read from the script file.

Listing 3 sets the CLASSPATH environment variable to the bare minimum required by Derby to run ij.

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At the end, the exit command is processed, and the script completes, shutting down the ij tool.

The first connection, to projectDB, is still active, but you need to specifically tell ij you want to use it.

The connection URL is entered either in ij directly by the user or using a script.

This article also introduced the ij tool, which comes with the Derby database.

But first, notice how ij created a second connection when you created the second database.

After this SQL INSERT statement, the ij tool reports that seven new rows were inserted.

Previously, you used a PreparedStatement to insert data into an Apache Derby database from within both a Java program and the ij tool.

This technique mirrors what happens when you execute an SQL query within the ij tool that is included with the Apache Derby database.

This is often done using an file containing SQL commands that is processed by the database's command line tool (for example: IJ).

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As shown in this example, you can also create a PreparedStatement to perform dynamic queries by using the ij tool.

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It uses the Cloudscape ij utility to process the CrtUsers. sql SQL script.

With the ij tool, you can accomplish this by using the REMOVE command to remove the PreparedStatement.

The ij tool provides an easy means for simple tasks, such as creating databases and executing SQL statements.

Create a CONTACT table in the ContactDB database by running DDL in the ij console (see Listing 1).

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If you can run the ij tool, the dblook class files are already in your CLASSPATH.

Ran entire SQL scripts via ij.

What's the ij tool's purpose?

New Derby users will find it helpful to learn ij in order to use it from within Eclipse.

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ij also enables you to set overall database properties. For example, you can set the derby. database. propertiesOnly

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Listing 1: Performing a backup of salesdb database through IJ

Use the IJ tool to execute