Abstract:

In this article, we have described expirience of the new NoSQL Database Management System (DBMS) development named as “GoldenRaceDB”. Also, we have described prerequisites that needed to create it in the context of the Russian software’s import problem. The new technology is realised as based on server environment Node.js. To understand this article, a reader should have expirience of server-side development by using one of high-level progrmming language (as minimum) or expirience of development custom DBMS. This technical solution is not open source, we have created it to solve our local tasks at our organization exactly, the technology birth place. But a reader can understand a general vector of creating custom resized DBMS by using other high-level programming language.

Abstract: Modern astronomy experiences a rapid increase of data being acquired in obser-vations or in numerical simulations. Efficient storage and management of these data is a problem as important as the scientific analysis itself. In the article we analyze the reasons behind such an "information explosion" and outline the problems the Virtual Observatory faces due to it – primarily, the development of standards and technologies for accessing the data remotely and in an automated way. We also review the main requirements for modern scientific information such as repeatability of results, versioning, data provenance etc. Obvious solution for long-term storage of such a data is Database Management Systems (DBMS). We discuss how well different kinds of astronomical information – catalogues, spectra, images, time series, simulation results – are compatible to relational model of most popular DBMSs and formulate requirements for specia-lized systems which are optimal for storage and analysis of scientific data.

Abstract: The observatory archive system includes a digital data storage and a search information system (SIS) with a dynamic web-based interface and http data access. To date, the system includes 16 digital collections of observational data (local archives), obtained on different instruments, operating or working on the telescopes. The earliest data refer to the end of 1994. There are currently actively replenished 6 local archives. The data storage includes a temporary storage area, located on a file server of the 6-m telescope (BTA), and the area of permanent storage. Permanent storage area includes CD / DVD-discs, a hard disk of the dedicated archive server and also a large capacity flash disk. For data protection during emergency situations or I/O defects of disks, we provide two full copies of the CD / DVD disks and two copies of the archive data on the hard disk of the archive server. One copy (A0) repeats optical discs, the other (A1), with the slightly modified directory structure, actually used by the SIS. D igital media devices and read-write data drives can not be attributed to long-term storage devices. For long-term storage of digital data it is necessary to provide rewriting of information every 5-10 years on a new type of media. Archive copies A0 and A1 are also supported for this procedure of rewriting. Archival data (A1) is repeated on a flash disk with the addition of a dump of tables and programs. There is the system backup for restoring after an emergency on the server. To ensure the modernization of the SIS, we support the two schemes of the database - test and operational. All our developments take place in the test database schema. When modifying the scheme after its checking the SIS switched to an updated version of the database. The original copy of the A0 and the availability of test database scheme allow to modernize the SIS, even at the level of the tables. Currently, the SIS implemented on DBMS PostgreSQL 8.3.7.

Abstract: We describe hereby the methodology and technology for creating of the multi-purposed information environment ‘T System’ based on the extension of the digital library T-Libra. The environment is destined for the integration of resources and services, which a typical for digital library with flexible full-text search, virtual museum, digital archive, research laboratory and educational server. The methodological basis this sort of extension is a hybrid two-level ontology based on interaction of functional systems (top level), concepts library and thesauri library (lower level). The technological basis of extension is an administrative division, which has tools for flexible set-up of T-System’s, as well as an unified search system includes the mechanisms of nonlinear cascade inquiries, which of that generate a relevant functional systems and combine the results of full-text search, related thesauri and concepts, text metadata and non-text objects of different modalities (graphics, sound, video etc.). The above-mentioned environment is designed in three-tier architecture (Web-browser / Web-server + Application server / DB server) with using of special indexing system for increase of search effectiveness, as well as of external logic which is built-up in Application Server.

Abstract: The architecture of the Binary star DataBase (BDB) being constructed in the Institute of astronomy of the Russian Academy of Sciences is described. The purpose of the BDB creation is to join the comprehensive information on binary stars of all observational and evolutionary types originated from a variety of catalogues and databases of binary and multiple stars, as well as to make a convenient tool for work with these catalogues data. We consider the main problems arising in the process of BDB implementation, the methods of gathering information of original catalogues, as well as the schemes of cross-identification of the objects. The BDB is realized on the basis of the Nagare framework (stackless Python/SQLAlchemy/Elixir) and of the Postgresql database management system, its beta-version is available at http://bdb.inasan.ru.