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Downloads

Documentation

For research papers see the link on the Secondo home page. To become acquainted with Secondo, we recommend to start with the short documents listed below before delving into User Manual or Programmer's Guide.

• Short Guide to Using Secondo
• Short Guide to Querying at the Executable Level
• Example: Loading Tracks and Displaying Them With a Map Background
• User Manual
• Programmer's Guide
• Format Description for Spatial and Spatio-Temporal Data

If you have some problems concerning installation or usage please read first the informally collected notes in the Release-Notes.txt.

Lecture Video

Here is a video of a lecture presented by Ralf Hartmut Güting on August 14 at the Summer School "Stuck in motion? Reconnecting questions and tools in movement ecology", Evenstad, Norway, August 2012.

The lecture (about 2 hrs duration) provides an introduction to the management of moving objects in databases to an audience of animal ecologists; it contains about one hour of practical demonstrations of the Secondo system and the querying and visualization of moving objects. The lecture is entitled "Calculations with Moving Objects in Databases" (streaming, download).

Secondo News

If you wish to be informed about new Secondo releases or new documentation, bugs discovered and bugfixes, please send an email to secondo@fernuni-hagen.de with a message like "please put me on the Secondo News mailing list". In the same way you can ask for removal from this list, of course.

Source Code

Below you can download the source code. We offer a MS-Windows and a Unix/Linux version, since the coding convention for an end of line on MS-Windows are two bytes CR/LF and on Linux its only LF. The latter can cause trouble on MS-Windows systems.

GUI Binaries

SecondoVM Appliance

The SecondoVM Appliance offers the possibility to use a full-fledged Secondo system within a virtual machine on your preferred system.

SecondoVM is a Linux-based installation of the Secondo extensible DBMS on a virtual machine. It is distributed as a zip-archive file. A user just needs to install VMware Player, a virtualization software, in order to play the virtual machine.

VMware Player is available from the VMware website (http://www.vmware.com/de/). It is available for Linux, and Windows. For non-commercial use, Licences are free of charge. For Macintosh platforms, one can use VMware Fusion (30 days of free trial period) or install the free VMware Player on a Windows/Linux installation using BootCamp.

The SecondoVM appliance was set up using the 32bit variant of Ubuntu as a base. When starting the virtual machine, VMware will set up a virtual network, acting as a NAT-bridge between the virtual and your machine's physical network. This allows for full communications with the system running on the virtual machine. Hence, you can use secure shell (ssh) to communicate with the virtual machine. Also, VMware tools can be used to share folders between the host and guest system.

Setting up the virtual machine does not require any difficult or time-intensive installation process.

• Download SecondoVM 3.4.0 (Secondo 3.4.0, 2.5 GB). Instructions, md5sum: b38e778199f69696074f066afd18ba42
• Download SecondoVM 3.3.0 (Secondo 3.3.0, 1.9 GB). Instructions, md5sum: f5d1fc58c8de550089a386ebffa5919a
• Download SecondoVM 3.2.1 (Secondo 3.2.1, 1.6 GB). Instructions.
• Download SecondoVM 3.2.0 (Secondo 3.2.0, 1.4GB). Instructions.
• Download SecondoVM 3.0.1 (Secondo 3.0, 989MB, MD5-checksum: 58c07aa2eb46cd85d1b0e3f0131d2d97).
• Download SecondoVM 3.0.1 instructions.

Live CD

The Secondo-Live CD offers the possibility to try out the Secondo system without any changes on your hard disk. This CD is based on Xubuntu 10.04 and Secondo 3.0. Some applications of the original Xubuntu system are replaced by Secondo together with some example data. This CD should run on x86/32 bit machines with at least 512MB of RAM. The first step for trying out the Secondo-Live CD is to burn the ISO Image to a CD.

The ISO Image can be found here: SecondoLive2.0.iso (Secondo 3.0)
Please check the correctness of your download using the md5-checksum

fa27ccc544f888d9ebbb3d9e8b1f3514  SecondoLive2.0.iso

After creating the CD, change the boot sequence of your computer to boot first from CD using the BIOS-settings dialog of your computer. Then, put the CD into the CD drive, turn on the computer and wait for some time. When the Xfce desktop is completely loaded, start a console. Within the secondo directory, you will find the subdirectories bin, optimizer, and Javagui. Here you can start your preferred Secondo user interface (refer to the Secondo User Manual).

Note that the live version is not appropriate for complex queries producing a lot of data. The whole system runs completely within the main memory and uses no hard disk space. While in a regular Secondo installation data which cannot be held within the main memory is swapped to the hard-disk, in the live system the hard disk is mapped to a ram disk which is also part of the main memory.

System Requirements for Secondo

If you plan to compile Secondo by yourself on your system (not within the appliance) you need to install some tools and define some shell environment variables. You can do this using your system's package manager (like yast, aptitude, or dselect), or by compiling the tool's source code. In the latter case please take care for the appropriate configure switches. We have collected comprehensive details about the installation in the SDK-SETUP documentation.

Secondo depends on the following free software packages (see the table below). In all cases, the development versions are required (packages with development versions usually contain the string "devel" or "dev" in their names)! The versions noted have been sucessfully used with Secondo, but you can also try other versions.

A more detailed list is presented in the SDK-SETUP documentation. For compiling on MS-Windows platforms we use windows ports of the tools above (basically MSYS and MinGW) collected at http://www.mingw.org. Some of this software is not easy to compile, but at http://gnuwin32.sourceforge.net you will find precompiled windows binaries. To ease this process, we have compiled a standard development kit ( Secondo SDK) for Windows and strongly recommend to use it (see below).

Platform Specific Installation without Secondo Development Kit

Secondo Development Kits

To try out Secondo, we strongly recommend to use either the SecondoVM or the Secondo Live-CD.
For developing with Secondo, we suggest to use a Linux platform or Mac-OSX. If you are using one of the distributions mentioned in here, please follow the instructions for your operating system in that table. Note that the script normally runs also with higher versions.
If using a quite different Linux distribution, install the tools from the table requirements using the software management tool provided by your distribution.
Note, some algebra modules require further libraries to be installed. If you want to use such an algebra, take a look to the file makefile.algebras to find out which additional libraries are required.
For developing with Mac-OSX, please use the SDK from the table below.

Secondo-SDK is a comprehensive tool collection and an installation script which automates most of the tasks.

The column "Known to Work" means that the installation works for this platform. Note that the Secondo version in the installation kit does not necessarily compile without problems. It may need to be replaced by a recent version that can be downloaded above.

The system dependent installation guides will help you to set up your environment ready to compile Secondo whereas the SDK setup documentation provides detailed information about the compile time and run time dependencies in general.

Moreover, we keep the earlier versions here if someone needs them for some reason.

How to use other Java SDK versions

For several reasons (e.g. after updating Java to a more recent version) one may need to change the Java SDK used by Secondo.

Installation without Secondo SDK

Edit the environment variable J2SDK_ROOT (e.g. in a file .secondorc) and set it to the root directory of the new Java installation (e.g. /usr/lib/jvm/java-1.5.0-sun).

Installation with Secondo SDK

In an installation with Secondo SDK this can be done by editing the file

  $SECONDO_SDK/secondo.config.win32  { or *.linux, *.linux64, *.mac_osx }

Here $SECONDO_SDK is a placeholder for the root directory of the Secondo SDK installation. Besides the windows configuration file there are also system dependent files for linux 32-bit, linux 64-bit and Mac. The only setting you have to do is to change the value of variable J2SDK_ROOT, e.g.

  #JAVA
  export J2SDK_ROOT="/c/Java/jdk1.5.0_12" 

Note that the correct directory name depends on your choice during the JDK installation process and the JDK version. In the example above it was JDK 1.5.0 update 12, which is currently contained in the Secondo SDK.

Data

Here we present some data sets e.g. geographical data or relations with standard data types represented in a textual nested list format suitable for Secondo.