A catalog is a collection of entries, each of which describes and points to a feature collection. Catalogs include indexed listings of feature collections, their contents, their coverages, and other metadata. Registers the existence, location, and description of feature collections held by an Information Community. Catalogs provide the capability to add and delete entries. At a minimum Catalog will include the name for the feature collection and the locational handle that specifies where this data may be found. The means by which an Information Community advertises its holdings to members of the Information Community and to the rest of the world. Each catalog is unique to its Information Community.

Yes. Even if it is a valid XML to include all protocols inside the onlineResource element from a RDF point of view the onlineResource is the predicate in a subject-predicate-object triple where the Service is the object. It needs to be repeated for each different object.

Check this %3 [...]

Semantic translator (after OGC) is a collection of mappings between the Information data model of a target Community and that of a source Information Community. The translator is generally held and maintained by the target Information Community, though both Information Communities may participate in co [...]

Metadata is data about data or a service, or the documentation of data. In human-readable form, it has primarily been used as information to enable the manager or user to understand, compare and interchange the content of the described data set. In the Web Services context, XML-encoded %2 [...]

A dataset is a logically meaningful grouping of similar or related data. Data having mostly similar characteristics (source or class of source, processing level and algorithms, etc.). This may include data from many sources and in many formats. For the Earth observation products, collections are [...]

Compliance testing determines that a product implementation of a particular Implementation Specification fulfills all mandatory elements as specified and that these elements are operable. Compliance testing may become more stringent over time, especially as a particular Implementation Specification matures. A m [...]

In general a clearinghouse provides a central access point for value-added topical guides which identify, describe and evaluate Internet-based information resources. In our case a clearinghouse is a decentralized system of servers located on the Internet which contain field-level descriptions of available digi [...]

GENESI-DR, (Ground European Network for Earth Science Interoperations – Digital Repositories), has the challenge of establishing open Earth Science Digital Repository access for European and world-wide science users to seamlessly access and share all data, information, products and knowledge ori [...]

The MyProxy is an online credential repository that provides secure and convenient storage for grid security credentials.

MyProxy is mature, open source software for the Globus Toolkit that has been use [...]

If you install your GENESI-DR's certificate (or any of the recognized companies) in your favorite browser you can be automatically recognized by the GENESI-DR Portal. For this, you just have to install your personal certificate in your favorite Internet browser and present it when logging [...]

The open source Globus Toolkit is a fundamental enabling technology for the "Grid," letting people share computing power, databases, and other tools securely online across corporate, institutional, and geographic boundaries without sacrificing local autonomy. The toolkit includes software services and lib [...]

The primary motivations behind the Grid Security Infrastructure are:

• The need for secure communication (authenticated and perhaps confidential) between elements of a computational Grid.
• The need to support security across organizational boundaries, thus prohib [...]

A gridftp server doesn't require any particular hardware configuration as the only service needed has not a big impact on the machine itself but only on the network traffic. Ideally such server has large disks and a gigabit ethcard, but whatever machine can be used: larger the% [...]

Please contact Terradue's Certificate Authority (ca at terradue.com) stating the project or collaboration you are involved, what are the current components that you need to use and your contact details. Generally generating new certificate takes some working days for identity confirma [...]

It clearly means that your proxy certificate is expired :)

Proxies are certificates signed by the user, or by another proxy, that do not require a password to submit a GRID job. They are intended for short-term use, when the user is submitting many jobs to the GRID and [...]