BIO-BIBLIOGRAPHY OF (AS) Benefactors (AS) OF THE COUNTRY AND CITIZENS (AS) 1847-2008 HONOR

Today's society called information society, grows rapidly and undergoes changes in the sources of information under the Information Technology and Communication ("tics"), in this situation it is necessary to develop tools or reference sources that allow the (to) user (a) the accessibility and use of information. It systematized information on the Meritorious Citizen of the Fatherland and Honor that is Costa Rica, since 1847 to 2008, due to its contribution to culture, science, recreation, among others. The overall objective of this research was to make a work print and digital reference, which will collect each of the biographies and works written by (as) Benefactors (as) of the country and citizens (as) of Honor and to facilitate access to information and strengthen outreach conducted by the Library "Victor Manuel Sanabria Martínez" of the Legislature, through its publications, exhibitions and related activities, to publicize its documentary. The variables used for this investigation were:-sources (primary and secondary), Organization of information - tools in various documentation centers and libraries. This was carried out a questionnaire, which was structured in the Excel program, aimed at (as) directors (as) or officers (as) in different libraries and documentation centers, and visits to selected sites for search and selection information. It is important to spread this final graduation in different public and school libraries in the country, since history and culture rescues national, who gave identity to the Costa Rican people. The systematization made by a thematic CD-ROM, provide accessibility to all (as) the (as) citizens (as) who access the Internet through the website of the Legislative Assembly Library and other state institutions wishing through a hyperlink on your "web", to refer the same.

Computer-aided tool for the teaching of relational algebra in data base courses

This article describes the design and implementation of computer-aided tool called Relational Algebra Translator (RAT) in data base courses, for the teaching of relational algebra. There was a problem when introducing the relational algebra topic in the course EIF 211 Design and Implementation of Databases, which belongs to the career of Engineering in Information Systems of the National University of Costa Rica, because students attending this course were lacking profound mathematical knowledge, which led to a learning problem, being this an important subject to understand what the data bases search and request do RAT comes along to enhance the teaching-learning process.It introduces the architectural and design principles required for its implementation, such as: the language symbol table, the gramatical rules and the basic algorithms that RAT uses to translate from relational algebra to SQL language. This tool has been used for one periods and has demonstrated to be effective in the learning-teaching process.  This urged investigators to publish it in the web site: www.slinfo.una.ac.cr in order for this tool to be used in other university courses.