Journal:Informatica
Volume 6, Issue 4 (1995): Special Issue on Information Systems and Software Systems Engineering, pp. 387–396
Abstract
Software development consists of several phases, where each phase has its own results. Language, which allows to describe collected results, their transformation and displaying, is discussed in this paper. A software tool is offered as an interpreter for this language. The language and software tool form a complex for data analysis. The complex is open and could be adapted for usage in different software system development stages. Object-oriented methodology for system specification design is used to show structure of the language and software tool.
Journal:Informatica
Volume 6, Issue 4 (1995): Special Issue on Information Systems and Software Systems Engineering, pp. 397–444
Abstract
We present two methods for expressing computations based on recurrence relations and discuss their relative merits. One method, the structural blanks approach, is built on top of traditional programming languages like Fortran or Pascal. It aims at program reuse and bases a certain architecture of software packages. The other method, the constructive recursive approach, is based on recursive relations over graphs.
Journal:Informatica
Volume 6, Issue 4 (1995): Special Issue on Information Systems and Software Systems Engineering, pp. 445–456
Abstract
The algebra–grammar model of user interface (UI) and the method of UI creation and updating by combining the visual formalisms are proposed. The UI building tools for applications of “MicroPoisk” DBMS are described. Special attention is paid to the requirements of the UI standards.
Journal:Informatica
Volume 6, Issue 4 (1995): Special Issue on Information Systems and Software Systems Engineering, pp. 457–482
Abstract
Enterprise goals justify and explain the presence of information system constraints, activities and actors. One of the main problem in the area of enterprise modelling is to bridge the gap between the description of goal as early requirement statement and the precise specification of related to this goal limited area of activity of which a stakeholder is concerned. Various kinds of entities, relationships and rules in the specification of several information system views exist for some reason, because they express the needs and rationales of requirements at the pragmatic level. On the other hand, goals justify and explain the presence of requirement components. Description of goals in terms of static and dynamic constraints is of interest, because it allows interpretation of goal descriptions as a driving force in the process of information system modelling at the organisational level.
The main focus of EUROMETHOD is on the contractual level starting with the call for tender, proceeding through the signing of a contract, eventually entering into the actual production of a set of deliverables. EUROMETHOD is focusing on the dynamic contractual relationships between customer and supplier. The basis of a contract consist of the specification of a problematic situation, and some general intentions and constraints for the description of a final state. Although the desired constraints and intentions of the information system could be formulated in the form of objectives, this part by EUROMETHOD is not guided. The aim of this paper is to introduce a unifying framework for modelling of enterprise goals in terms of semantic descriptions of information system views. Such a framework provide basis for better understanding of contractual customer-supplier relationships within several worlds of enterprise modelling.
Journal:Informatica
Volume 6, Issue 4 (1995): Special Issue on Information Systems and Software Systems Engineering, pp. 483–496
Abstract
The development of software systems is intensive person-oriented process. Therefore it is essential to use previous experience and knowledge. The extension of reuse through analogy is analysed in this paper. The proposed grouping of analogical methods, rules, etc., relies on their adaptability to application software development. The emphasis here is on analogue as a criterion to safeguard the desirable properties of application software. Knowledge kinds and mechanisms to enable reuse through analogy are discussed.
Journal:Informatica
Volume 6, Issue 4 (1995): Special Issue on Information Systems and Software Systems Engineering, pp. 497–522
Abstract
In this paper the universal structural type of entities is presented by recursive applications of two operators, i.e., operator which constructs positioned subsets of entity name universum and operator which constructs a functional set on the entity name universum. The object subtype is determined using an especial commutational diagram with the compositions of inner functions. The main integration rule of conceptual object–relationship–property scheme is determined by means of external containment function. A compositions of inner and external functions serve as a tool for normalization of entities systems. The advantages of proposed approach to the modelling of entities system are pointed out.