Because my testing was with the Cloudscape 10 beta version, I tried again. A page is a unit of storage whose size is configurable on a system-wide, database-wide, or conglomerate-specific basis. In addition to supporting policy files, Derby can detect digital signatures on JAR files. After passing through Informix’s hands, the product was acquired by IBM. When a Cloudscape system shuts down, a message goes to the information log:. Some SQL applications use hundreds or thousands of tables.

Uploader: Shaktilabar
Date Added: 4 October 2014
File Size: 54.66 Mb
Operating Systems: Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X
Downloads: 20010
Price: Free* [*Free Regsitration Required]

This minimizes the risk of a corruption. The IBM Cloudscape referral page contains links intended to help you find information on Apache Derby sites as an alternative to the information previously posted at IBM. It also usually contains an information log about activity in the most recent session of the Cloudscape system. To drop a database, delete the database directory with operating system commands. That driver is part of the db2 express installation, which you can download from the official web site.

Not having the user names and passwords maintained in the database means less administrative overhead to transfer names into the database. You can specify only databases that are local to the machine on which the JVM is running.

Whereas inserts, updates, and deletions may be cached before being written to disk, log entries tracking all those changes are never cached but always written to disk.

The error is also cloucscape to the information log. When developing Cloudscape applications, create a single directory to hold your database or databases. It is used only in rare instances, usually for read-only databases.


This is especially important in cloudscaoe server applications, which must be deployed with as little administrative overhead as possible. Databases do not necessarily have to live inside the system directorybut keeping your databases there is the recommended practice. There is no drop database command.

In addition to supporting policy files, Derby can detect digital signatures on JAR files. The databases can be archived into a jar or zip file or left as is.

Cloudscape Version A technical overview

In embdeded embedded system, do not run both ij and Cloudview or two ijs, or two Cloudviews, or any two applications in the same system udbc on the same database at the same time; severe database corruption can result.

A Java stored procedure consists of Java code that is callable from SQL, runs in the database server, and accesses the database. For example, suppose you have archived the database jarDB2 into a file called jar2.

The examples in this section use the syntax of the database connection URL for use in an embedded environment. Of course, these features increase the DBMS’s appetite for memory, disk clusters, and multiple processors.

An example use of the database connection URL: I had to exit ij after disconnecting. This standards compliance enables a developer to write an application against Derby and deploy it against another DBMS. A Cloudscape database also stores its own configuration information. When you create a new database, Cloudscape puts it in cloudscpe current directory of your JDBC program unless you’ve defined the system property cloudscape.


You can use compression tools such as pkzip, which may be embeddex to reduce database size for backup storage.

See the Cloudscape Server and Administration Guide. Instead clousdcape specifying attributes on the database connection URL, you can specify attributes as properties in a Properties object that you pass as a second argument to the DriverManager. The Derby software includes so many capabilities, what more could you possibly want? Derby provides persistence of data by storing data in disk files.

Cloudscape Version 10: A technical overview

It also provides binary and character objects blob, clobbut not user-defined types. See the Server and Administration Guide for details. The only way to jdnc data in this environment is to encrypt it on disk.

For information on setting this and other properties, see Tuning Cloudscape. The data in the database disk files cloudsacpe stored in a portable format, so that databases can be easily transported from machine to machine regardless of the CPU architecture of each machine.