In the graduate thesis I will present and show how I made a web application for designing relational databases. The purpose of the web application is to enable a database designer as opposed to the rest of paid applications that use logical level, free design in the conceptual level.udAt the beginning of the thesis I briefly introduce the planning phases of the database. Below I explain what added value has our product using conceptual level in comparison with the others. After placement of the product in the level of planning, I present the way of planning within the application itself. In the second more practical part are described all the used tools and libraries we have used, and in the last part I describe and introduce the input mask and the main functionality of the product.
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