Startup

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This article is part of the Getting Started Guide. It tells you how to get BaseX running.

Contents

Getting Started

BaseX is very light-weight. It can be run and used in various ways:

It can also be embedded as a library in your own application.

First of all, download BaseX from our homepage. The following distributions are available:

Distributions

Core Package

The Core Package is a small JAR file. It contains the database system, the XQuery processor and the graphical user interface. It does not require any additional libraries.

Full Distributions

The ZIP Package and the Windows Installer contain the BaseX core library and extra libraries for web applications and advanced features, Start Scripts, and some additional optional files.

After BaseX has been unzipped or installed, the following directories will be available:

If BaseX is started via the start scripts or the Windows icons, all JAR files in the lib directory and its descendant directories will be added to the classpath.

If you work with the ZIP distribution, and if you want to make BaseX globally available, you can add the bin directory to your PATH environment variable.

Web Archive

The WAR Archive can be embedded in existing Java web servers.

Other Distributions

Various other distributions are available from the download page, most of which contain only the core package and, optionally, scripts for starting BaseX.

Requirements

BaseX is platform-independent and runs on any system that provides an implementation of the Java Runtime Environment (JRE):

BaseX has been tested on several platforms, including Windows (2000, XP, Vista, 7), Max OS X (10.x), Linux (SuSE xxx, Debian, Ubuntu) and OpenBSD (4.x).

Concurrent Operations

If you want to perform parallel (concurrent) read and write operations on your databases, you must use the client/server architecture or deploy BaseX as web application. You can safely open a database in different JVMs (Java virtual machines) for read-only access, and you will not encounter any problems when reading from and writing to different databases, but update operations from different JVMs to the same database will be rejected or may even lead to corrupt databases.

For example, if you only read data, you can easily run several clients (standalone, GUI, database clients) at the same time. If you update your data, however, you shouldn’t use the GUI or a standalone instance at the same time.

More details on concurrency are found in the Transaction Management article.

Standalone

The Standalone Mode can be used to execute XQuery expressions or run database commands on command line. It can also be used both for scripting and batch processing your XML data. It can be started as follows (get more information on all Startup Options):

It is important to remember that the standalone mode does not interact with the Client/Server architecture.

Graphical User Interface

The GUI is the visual interface to the features of BaseX. It can be used to create new databases, perform queries or interactively explore your XML data.

It can be started as follows (get more information on all Startup Options):

Note that the GUI does not interact with the client/server architecture.

Client/Server

Server

The Database Server comes into play if BaseX is to be used by more than one user (client). It handles concurrent read and write transactions, provides user management and logs all user interactions.

By default, the server listens to the port 1984. There are several ways of starting and stopping the server (get more information on all Startup Options):

Pressing Ctrl+c will close all connections and databases and shut down the server process.

Client

The BaseX Client interface can be used to send commands and queries to the server instance on command line.

It can be started as follows (get more information on all Startup Options):

The default admin user can be used to connect to the server:

The password should be changed with the PASSWORD command after the first login.

We provide additional clients in various programming languages.

HTTP Server

With the HTTP Server, BaseX can be used to build Web Applications. It provides access to the REST, RESTXQ and WebDAV services. An instance of the Jetty Web Server will be created, which by default listens to the port 8984. Additionally, the BaseX Server will be started, which is accessible on port 1984.

It can be started as follows (get more information on all Startup Options):

In the first two cases, the command-line output will look similar to the following lines (the JSP warning message can be ignored):

[main] INFO org.eclipse.jetty.server.Server - jetty-8.1.18.v20150929
[main] INFO org.eclipse.jetty.webapp.StandardDescriptorProcessor - NO JSP Support for /, did not find org.apache.jasper.servlet.JspServlet
[main] INFO org.eclipse.jetty.server.AbstractConnector - Started SelectChannelConnector@0.0.0.0:8984
HTTP Server was started (port: 8984).

You can adjust the Jetty logging level by adding the following properties to the start script:

-Dorg.eclipse.jetty.util.log.class=org.eclipse.jetty.util.log.StdErrLog -D{classref}.LEVEL=DEBUG

After that, you can e. g. open your browser and navigate to the RESTXQ start page http://localhost:8984.

Database Administration

The DBA is a web-based database administration interface. It allows you to create and administrate databases, evaluate queries in realtime, view log files, manage users, etc.

It can be accessed via http://localhost:8984/dba/.

Changelog

Version 8.0
Version 7.0
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