dLibra Functions

Simplification for users Digital objects stored in dLibra repository are presented to readers using the Web repository. Users of these websites have many different functions in the access to resources repository. These are among others:

Local search DLibra repository allows users to search placed in the digital objects. This search can be done in the individual elements of metadata (eg. In the title), throughout the specification or in the text of digital objects, unless the object format allows for extraction of text (currently it is possible, among others, for documents in HTML, TXT , PDF, DjVu, MS Office, OpenOffice). There is also constructing an advanced form of search queries, giving the possibility to combine queries using logical operators. In addition, search the local resources can be narrowed down to a user-selected collection of objects.

Scattered search Each dLibra repository may provide descriptive metadata stored objects to other repositories - this is done by the OAI-PMH. This repository can also download bibliographic descriptions from other repositories. This allows you to search for objects in digital repositories networks dLibra exchanging each other metadata. Search within the network on epozytoriów is possible both at the level of entire metadata individual objects as well as the narrowing of the individual elements (fields) of these metadata.

Index values Besides local search and retrieval of distributed resources can browse the index value. Value of each item description (eg. Title, author) can be viewed on the Web repository in the form of alphabetized index.

Collections of objects The reader can browse the repository using defined by the editors of a collection of objects. Within the collection, you can either search or browse a list of objects in the collection.

Readers accounts Readers can independently create an account, inter alia, allow them to subscribe to newsletters about news sent via e-mail.

Storing and sharing One of the most important tasks of dLibra software is storing and sharing digital objects. In order to accomplish this task dLibra software is equipped with, among others, with the following features:

The hierarchical structure of the repository The structure of directories and publications created by the editors, and only available to them. It is a structure in which they place digital objects.

Collections The structure of directories and publications created by the editors, and only available to them. It is a structure in which they place digital objects.

Grouping of digital objects The structure of directories and publications created by the editors, and only available to them. It is a structure in which they place digital objects.

Planned digital objects The structure of directories and publications created by the editors, and only available to them. It is a structure in which they place digital objects.

Content versioning The structure of directories and publications created by the editors, and only available to them. It is a structure in which they place digital objects.

The structure of directories and publications created by the editors, and only available to them. It is a structure in Which they place digital objects.

Technical metadata They contain information structure of a digital object, types, sizes and checksums of individual files etc.

Administration metadata contain information about the location of the object in the structure of the repository, each user permissions to an object, the state of the object, etc.

Descriptive metadata They include the assignment of an object to the collection and description of its contents. Descriptive metadata can be imported from other formats such as XML (including MASTER, MARCXML and RDF), MARC 21 or BibTeX.

Cooperation with other systems DLibra repositories can also work with external systems. Used for this purpose are, inter alia:

RSS channels Much of the information available on the web dLibra repository is also available in the form of RSS feeds. These include information such as the recently added objects, planned messages. It is also a searchable repository via RSS feeds.

The OAI-PMH protocol Each repository dLibra can work with repositories that support the OAI-PMH. This protocol enables the exchange of metadata between different information systems. This enables m. Al. Search distributed resources. In addition dLibra repositories provide the same with this protocol metadata objects stored in the format Dublin Core and f ormacie specific to a particular repository. This allows for easy use of metadata from the repository by other systems.

SSO DLibra repositories also co-operate with the systems of Single Sign-On (SSO system) so that they can be easily integrated into existing portals / systems that operate on the principle of single sign-on. Currently, single sign-on mechanisms are based on a system of CAS.

LDAP Authentication In dLibra system it is possible to authenticate against an external LDAP servers. In addition, it is possible to create dynamic groups of users based on LDAP attributes and use them to authorize access to digital objects.

Readers accounts Readers can independently create an account, inter alia, allow them to subscribe to newsletters about news sent via e-mail.

dLibra and search engines In addition, a web page repository based on dLibra are specially prepared for search engines. Through activities such digital objects placed in a publicly accessible repositories based on dLibra are more visible on the Internet and can be easily found in various search engines. DLibra repository provides administrators with powerful rights management mechanism. Rights are granted on a number of levels library, ranging from the rights of administrative defined for the entire library, finishing with the rights of the individual digital objects. In addition, access to the repository can be controlled based on the IP addresses of the computers - for example, computers in the institution concerned can make all the objects in the repository, and users outside the institution only part of them.

Architecture of the dLibra repository Digital Repository architecture based on dLibra software:

The three basic elements of such a repository dLibry:

Editor and administrator application Allows users creating a digital repository (introductory digital objects, describing them etc.), And administrators to use the functions of the repository.

Digital library server Responsible for the execution of all functions of the library running on a dedicated computer (or multiple computers), unavailable directly to users.

Application of the reader Available through the Web site, allows users ("readers") use the resources in the repository digital.

Three main groups of dLibra users:

Administrators Responsible for software configuration dLibra repository adaptation to the needs of a particular installation, management of the entire repository (eg. User management).

Redactors Users describing and introducing digital object repository, usually responsible for the content and metadata objects placed in the repository.

Readers Users of the resource in the repository dLibra, browsing a Web page repository, searching and download or viewing on-line digital objects of their interest.