ARHIVSKI VJESNIK 41. (ZAGREB, 1998.)

Strana - 74

S. Nikolovska, B. Asprovska, S. Dragićević, O. Iliev, The integrated information system of the Archives of Macedonia, Arh. vjesn., god. 41 (1998), str. 67-86 fall outside the approved level of physical access to the premises or in the information access to the databases. - Class of archive materials - This class includes all original documents that are kept permanently in the repositories, photocopies, microfilms, microfiches, documents that are appropriately memorized in the computer system, and all other forms of preserving data of interest to archive work. The proper categorization of the level of access to the archive materials is of essential importance for efficient operation of the system, and its abuse may have unforeseen consequences. The user gets information about the existence of a document if and only if his access category is higher than the one of the document. - Class of equipment - This class includes all valuable equipment in the premises of the Archives. The accent is upon computer equipment, printers, scanners, etc. Since this concerns equipment that works within a network, the problem of protection is reduced to holding equipment within specific premises. Just like with the archive materials, a tagging system will be used (C.J. Revell - 95), enabling that equipment can be used in one room while its unauthorized removal will automatically activate the alarm. - Class ofpremises - This class includes all premises of the Archives of Macedonia which are of interest for the system. The protection of these premises supposes: - protection against fire; - protection against flooding; - protection against burglary; - movement detection. 3.1. SYSTEM ARCHITECTURE In selecting the hardware platform of the information system of the Archives of Macedonia, the approach was adopted of creating a distributed database in accordance with the client-server methodology, by means of a network of personal computers. In support to the choice of this methodology is the fact that all renown PC manufacturers are offering specially designed PC network servers who with their power are already close to the mini-computers, offering an incomparably larger structural flexibility. At present, a computer network is installed at the Archives of Macedonia, which consists of one server and 10 clients with the following performances: Server: IBM PC Server 310, with 32 Mb RAM and 2.0 Gb HDD; Clients: IBM PC 100, with 16 Mb RAM and 1.3 Gb HDD. Because of the need for a multi-user and multitasking operating system, the Microsoft Windows NT operating system was chosen for the following reasons: 74