$Id: UsersGuide.xml,v 188.8.131.52 2005/05/05 20:18:59 msaffitz Exp $
Table of Contents
Table of Contents
The Genomics Unified Schema (GUS) is an extensive relational database schema and associated application framework designed to store, integrate, analyze and present functional genomics data. The GUS schema supports a wide range of data types including genomics, gene expression, transcript assemblies, proteomics and others. It emphasizes standards-based ontologies and strong-typing.
The GUS Application Framework offers an object-relational layer and a Plugin API used to rapidly create robust data loading programs for diverse data sources. The GUS distribution includes plugins for standard data sources. The GUS Web Development Kit (WDK) is a rich environment for efficiently designing sophisticated query-based websites with little programming required.
Table of Contents
While the GUS Application framework has primarily been developed on Linux, it should in principle run on any UNIX-based operating system, including Mac OS X, provided the software requirements below can be satisfied.
Users have reported difficulty running GUS on Solaris.
As noted below, GUS requires the use of either Oracle or PostgreSQL as a relational database management system (RDBMS). PostgreSQL support is much more recent, and as such, Oracle is recommended whenever practical. For installations with more than 3-5GB of data, Oracle is highly recommended. PostgreSQL, however, is an open source and freely available database system, and thus makes an attractive option for smaller GUS installations, or where Oracle is not economical. The choice of an RDBMS will affect your system and hardware requirements. Refer to you RDBMS's documentation for further details and specific requirements.
GUS's hardware requirements depend largely on the size and complexity of the data you intend to load and analyze using GUS. Most installations will have a separate server for the database management system, for which you should refer to your RDBMS's documentation for requirements. For the GUS Application framework, any modern desktop PC satisfying the above architecture requirements should suffice. A 2.4Ghz Pentium with 512MB of RAM (or equivalent machine) would serve as a good basic machine. For parsing large datafiles, a 3.2Ghz Pentium with as much as 4GB of RAM may be more appropriate. For guidance specific to your situation, refer to the mailing list archives or post a new message to the list.
GUS requires the following third party software packages:
Perl 5.8.1 or above (www.perl.com)
Perl Modules: DBI, DBD-Oracle and/or DB-Pg, Parse-Yapp, XML-Simple, and XML-Parser or XML-SAX
Java 1.4.2 or above, including the SDK (java.sun.com)
Apache Ant 1.6.2 or above (ant.apache.org)
If the GUS Schema has already been installed in the RDBMS, you may skip this step and proceed directly to the section called “Downloading GUS”
Once you've satisfied the above software requirements and installed and configured your database system, you should create or identify an existing database to install GUS into. As part of this process, more advanced users of GUS may consider tuning various database settings such as a data block size and memory allocations, as well as custom tablespace creation. Many of these settings will vary greatly depending on your usage of GUS and database system; refer to your RDBMS's documentation for further details and options.
Once the database to hold GUS has been created and configured,
you must create or identify a user that the GUS installer will use to
install the GUS Schema. When using Oracle, this user should be granted
create session and
dba privileges for the duration of
the install (after installation these privileges may be revoked). For
PostgreSQL, it is recommended that this user be the owner of the
database or be granted all privileges on all objects within the
database. For both database systems, the installer will connect as
this user, and as this user create the necessary schemata, tables,
sequences, indexes, constraints, and the other objects that compose
If you are using Oracle, you must set the
The most recent release of GUS is available from the GUS Project website (www.gusdb.org) as a single distributable. From time to time, the GUS Project website may also provide less stable development releases of GUS as a single distributable. In addition, the GUS source repository is available for "bleeding edge" releases.
Since the 3.5 release of GUS, the source repository is no longer the preferred or recommended method for downloading GUS. The source repository contains the most recent additions and changes to GUS, which may be inconsistent with this and other documentation, and which may include changed APIs that could cause data loss.
Once downloaded, the GUS distribution should be moved to the location of your preference, and expanded:
$ tar -zxvf gus-x.x.x.tar.gz
Throughout this documentation, the dollar
$) symbol will be used at the
beginning of a line to denote the shell prompt. You should not type
the dollar symbol as part of your input.
Once you have downloaded and expanded the GUS distribution, you
must configure your environment. These settings are required for all
uses of GUS, and as such is it highly recommended that you add them in
such a manner that they be set upon creating a new session (i.e. in your
.bash_profile file). The following
examples are for the Bash shell, and assume you have expanded the GUS
distribution in the directory
Example 2.1. Configuring the Environment for GUS
$ export GUS_HOME=/home/smith/GUS/gus_home $ export PROJECT_HOME=/home/smith/GUS/project_home $ export GUS_CONFIG_FILE=/home/smith/GUS/gus.properties $ export PERL5LIB=$GUS_HOME/lib/perl $ export PATH=$GUS_HOME/bin:$PROJECT_HOME/install/bin:$PATH
Throughout the rest of this document,
$GUS_CONFIG_FILE will frequently be
used to refer to the locations specified above.
After your environment has been configured for GUS, you must
configure the GUS software itself. First, copy the
copied, you must open this file and provide the necessary
Example 2.2. Configuring
The database system you are using. This must be either
Since GUS 3.5 the
schema.prop and other various
configuration files are automatically created using the values
specified in the
gus.config file. All
of these files, except the gus.properties file, will be overwritten by
the GUS installer whenever it us run. The gus.properties
file will never be overwritten by the GUS installer. Care should be
taken to understand at all times what values are specified in the
gus.properties file as it determines the database the GUS system will
You are now ready to install the GUS Schema and/or Application Framework. The Schema should only be installed once per GUS instance/database and most commonly will be shared by many users (each with their own installation of the Application Framework). To install both the Schema and Application Framework, use the following command:
$ build GUS install -append -installDBSchema
If the Schema has already been installed, you should instead use the following command:
$ build GUS install -append
The install process should take 5-30 minutes to complete, depending on the speed of your system, your RDBMS, and the specific tasks required for your environment. When complete, you will see the following on your screen:
[echo] Installation Complete
You may at some point see
[concat] No existing
files and no nested text, doing nothing as part of
the install process. This is a normal message and does not indicate
that an error has occurred.
If you installed the GUS Schema in the previous step, you must now address the issues in this section. If you only installed the Application Framework, you may skip this section.
The GUS Application Framework includes support for using basic
access permissions with a unix-based model of users, groups, and
"others" and through the use of "projects". These permissions are not
meant as a robust solution to data security, and are easily
circumvented though use of direct database access (i.e.
psql) or local modifications of the
GUS Application Framework. As such, it is highly recommended that you
carefully evaluate and implement a database-level privileges system
that makes sense to your configuration. Groups that need the highest
levels of security, such as HIPAA compliance, should consider using
Oracle with the Virtual Private Database option and/or other
As an example, the Computational Biology and Informatics
Laboratory (CBIL) uses a privilege system that is based on two roles,
a read-only role,
GUS_R, and a write
GUS_R has been granted the
select privilege on all tables and
views in GUS, and
GUS_W has been
update, insert, delete
privileges on all tables and views and
select on all sequences in GUS.
Individual databases users are then granted the
GUS_R role and, as appropriate, the
GUS_W role. For finer control, this
model may be extended to individual schemata or sets of tables.
For auditing purposes, the GUS system requires that the Application Framework and individual plugins be registered within the GUS Schema. To register the Application Framework in the GUS Schema, use the following command:
$ ga +meta --commit
It is only necessary to run this command once. Upon successfully running the command, you will see a stream of XML displayed on your screen.
Plugins will need to be registered in a similar fashion prior to use. For more information on registering plugins, please refer to the GUS User's Guide.
You may have noticed the
project options specified in the
gus.config file above. These values
are used for auditing changes to the database on an individual row
level, as well as part of the permissions system built into the GUS
Application Framework. Your instance of GUS should now be configured
with the standard "DBA" entries. You may at this point wish to create
more specific users, groups, and projects so that further work with
GUS will be properly tracked.
For more information on creating users, groups, and projects within GUS, please refer to the GUS User's Guide.
From time to time it may be necessary to reinstall the GUS
application framework, either as part of an upgrade, or to propagate
changes you've made within the
$PROJECT_HOME directory to the
$GUS_HOME directory. If you wish to
force all data model objects to be rebuilt (for example, due to a change
within the schema), you should first run the command:
$ touch $PROJECT_HOME/Schema/gus_schema.xml
To reinstall the GUS application framework, simply run the build command:
$ build GUS install -append