This distributed client/server application offers technology of database querying for users, not possessing knowledge of the SQL language. DB Query is a multi-tiered client-server application. It is partitioned into two logical units which run in conjunction on separate computers and consists of thin client and remote server. Db Query client is installed on the end user's computer. It is a simple and not demanding to resource program (thin client), running under Windows systems, has a friendly interface and allows to make database search requests quite simply. For searching in databases the access schemes are used. These schemes are clear for perception information model of the related database tables. Having formed the request, client sends it to remote server processing. The Remote server is installed in a central networking location accessible to all clients. It performs the authorized connection of clients, granting them the individual access rights, and executes incoming search queries. Client has not di |
