Sonja Ristic

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The paper considers an original approach to the process of integration of complex database schemas. Apart from the proposed theoretical model of the approach, we also developed a CASE tool, named IIS*Case (Integrated Information Systems*Case, R.6.0), which enables its practical application. The basis of the approach aimed at designing and integration of(More)
A database schema is a formal and abstract definition of data and constraints of the real system. In order to formulate the formal criteria of "well-designed" database schema at schema level of abstraction, the precise formal specification and the classifications of different types of constraints are needed. The formal specification of constraints could(More)
The initial assumption is that a database schema is produced by the integration of simultaneously and independently designed subschemas. The notion of a subschema is defined using the concepts of the relational data model, according to the appropriate external schema, which is used to express a user view onto a future database, on the conceptual level. The(More)
IIS*Case is a software tool that provides information system modeling and prototypes generation. At the level of platform independent model specifications, IIS*Case provides conceptual modeling of database schemas that include specifications of various database constraints, such as domain, not null, key and unique constraints, as well as various kinds of(More)
The inverse referential integrity constraints (IRICs) are specialization of non-key-based inclusion dependencies (INDs). Key-based INDs (referential integrity constraints) may be fully enforced by most current relational database management systems (RDBMSs). On the contrary, non-key-based INDs are completely disregarded by actual RDBMSs, obliging the users(More)
Reengineering is one of the key concepts in software maintenance and evolution. It generally includes some form of reverse engineering followed by some form of forward engineering or restructuring. In the paper we focus on database reverse engineering. Model-driven software engineering promotes the idea of abstracting implementation details by focusing on:(More)
In this paper we present a segment of our research efforts focused on meta-models relating to databases. We developed a meta-model of relational database schema and here we deal with one of its segments. Namely, some kinds of relational database constraints are well-known and can be implemented by the declarative Database Management System (DBMS)(More)