CLOUDSCAPE EMBEDDED JDBC DRIVER

Derby can be run under a Java 2 security manager. You can also specify these same attributes and values on the client database connection URL if you are using Cloudscape as a database server. For example, when Cloudscape is running in the Cloudconnector environment, a client application might use the following database connection URL: When you create a new database, Cloudscape puts it in the current directory of your JDBC program unless you've defined the system property cloudscape. It also provides binary and character objects blob, clob , but not user-defined types. Then back up that folder. In an embedded environment, you also call getConnection to shutdown a Cloudscape database.

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Cloudscape uses the cloudscape. Shutting Down the System In an embedded environment, when an application shuts down, it should first shut down Cloudscape. We apologize for any confusion. For more information, visit emmbedded official web site. Storage and loading of application classes in the database is provided by two mechanisms: When user authentication is enabled, an application must provide a jbc name and password.

For example, to set the autocommit attribute to false, you could set the autocommit property to false instead, as in the following example:.

Java, SQL, Cloudscape, and Derby

All threads that access the database do so through the database engine. The cslook utility lets you examine database objects such as indexes, keys, and views. The default configuration for Cloudscape is that Cloudscape boots a database when an application first makes a connection to it.

Applications must load the driver in order to work smbedded the database. Cloudscape uses a boot password for encrypted databases, a separate password from the one used to open a JDBC connection. Using the database connection URL as described here, you can connect to databases in more than one directory at a time. In addition to dloudscape policy files, Derby can detect digital signatures on JAR files.

IBM removed this feature for Version 10 because the implementation of user-defined embeddef did not adhere to part 13 of the SQL Standard.

Cloudscape Version A technical overview

Cloudscape 10 removed several types supported in earlier versions, including boolean, tinyint, nchar, and Java Data Types user-defined types. Derby provides developers with a small footprint, standards-based Java database that can be tightly embedded into any Java-based solution.

A rather weak encryption algorithm, DES, is the default but you can specify what algorithm to use. Each Derby instance can manage multiple databases, the databases can live on various media, and there's nothing to stop the application from connecting to other DBMS systems. You can add attributes such as user ID, password, database name, log device name, and whether to create a new database.

JDBC Applications and the Cloudscape Technology

Cloudscape comes with a local JDBC driver. The file should be in the format created by the java.

The Derby software includes so many capabilities, what more could you possibly want? This is especially important in deployed server applications, which must be deployed with as little administrative overhead as possible.

You can boot all the databases in the system, and the boot-up times of all databases affect the performance of the system. When you create a database, Cloudscape creates a directory that includes a lock file, service properties files, a subdirectory log for transaction logs, a subdirectory tmp for working storage, and a subdirectory seg0 for data files.

Cloudscape Version 10: A technical overview

The Derby Network Server provides connectivity to Derby databases within a single system or over a network. Because Cloudscape can execute Java stored procedures and user-defined functions embedded in clousscape database, there has been some concern about using SQL injection techniques to execute malicious Java code. It is based on the 1. Simply shut down Cloudscape, then back up cloudscappe in the context of their system. Because my testing was with the Cloudscape 10 beta version, I tried again.

The sysinfo tool provides version and Java classpath information. If the data files can be read, a sophisticated user could decode the information they contain.

All such databases are read-only.

Users can be restricted to read-only access or restricted from any access on a per-system or per-database level. You can also specify an absolute path. If it cannot create the intermediate directory, the database creation fails.