Multi-tier enterprise systems consist of more than two distributed tiers. The design of multi-tier systems is considerably more involved than two tier systems. Not all systems should be designed as multi-tier, but if the decision to build a multi-tier system is made, there are benefits to this type of system design. CSCources is a system that tracks computer science course information. The requirements of this system indicate that it should be a multi-tier system. This system has three tiers, client, business and data. Microsoft tools are used such as Visual Basic (VB) that was used to build the client tier that physically resides on the client machine. VB is also used to create the business tier. This tier consists of the business layer and the data layer. The business layer contains most of the business logic for the system. The data layer communicates with the data tier. Microsoft SQL Server (MS SQL) is used for the data store. The database containsseveral tables and stored procedures. The stored procedures are used to add, edit, update and delete records in the database. Microsoft Transaction Server (MTS) is used to control modifications to the database. The transaction and security features available in the MTS environment are used. The business tier and data tier may or may not reside on the same physical computer or server. Active Server Pages (ASP) was built that accesses the business tier to retrieve the needed information for display on a web page. The cost of designing a distributed system, building a distributed system, upgrades to the system and error handling are examined.Ball State UniversityMuncie, IN 47306 / Department of Computer Science

Thesis (MPhil)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: The rise of the network economy had a resounding impact on the world economy. Business remains transfixed between choosing between hierarchical organizational structures suited to a control and command mindset or transforming to an organizational structure intent on sensing and responding. Flexible and adaptive enterprises are more suitable to an increasingly volatile business environment. Current business trends worldwide seem to point in this direction. This may be an indication of the way in which organizations strive to avoid running the risk of business insignificance. Driven by business volatility, organizational structures are turning increasingly to naturally occurring ‘organizations’ to construct their own malleable versions. The redesign of an organizational structure is as important as reviewing information flows, optimizing technology and most importantly, finding the right type of employee to set the wheels of a real-time enterprise (RTE) in motion. Any discussion pertaining to real-time will touch on time. A reflection on hierarchical organizations highlights their stability, but also their inflexibility and sufficing information practices. It then becomes clear that the new business direction in an intensely competitive environment will have little tolerance for any measure of organizational rigidity. But how driven and fast can information really be processed and still enhance the value of an enterprise? The RTE is not a fully automated enterprise. Its employees may be less involved in its everyday tasks, but remain part of its decision-making process. To what degree does the RTE business model then facilitate value-adding information processing by both automation and manual interventions? Do limits exist where speed and time wastage in business are concerned? Is speed at all costs the only concern of the RTE? The aim of this paper is to answer these questions conceptually. Cognizance was taken of the impact of the volatile business environment on organizational structures influencing the current understanding. The highlighted business trends are based on recently published global and authoritative industry papers, business analyses and academic interpretations. Some of the best material was sourced from professional journals discussing the infinite angles of real-time information. Castells’s work on the network society proved to be extremely valuable to gain a holistic understanding. The latest developments were obtained from well-established research companies. During the investigative phase of this paper, the author encountered one thesis on real-time information focusing on information technology. It was evident that more research is required to answer the questions posed. The eventual findings were in line with the complexity and scope of the subject. The current demands of a global network economy necessitate agile and adaptive networked enterprises, not hierarchies. Roles are becoming more important than positions in the organizational transition phase to a networked, flat structure. A failure to start with such a transformation programme will result in a failure to survive in a fiercely competitive global business environment. It was clear that the RTE is dependent on the establishment of a balance struck between business entities in their interactions with one another as parts of a whole, replete with conditions and requirements. It is only in this sense that access to real-time information could be seen as a differentiating factor in global business. / AFRIKAANSE OPSOMMING: Die ontstaan van die netwerk-ekonomie het ‘n beduidende invloed op wêreldhandel gehad. Besigheid het nog nie uitsluitsel verkry tussen twee soorte organisatoriese strukture nie, naamlik, ‘n hiërargiese organisasiestruktuur wat pas by ’n beheer-en-regeer denkwyse en die ander, ’n veranderende organiese struktuur wat aanvoeling en reaksie belangriker ag. Buigsame, aanpasbare organisasies is uitstekend aangepas by ’n toenemend onsekere besigheidsomgewing. Dit wil voorkom of organisasies tans in hierdie rigting neig om die risiko van onbeduidenheid in die hedendaagse sakewêreld op dié manier te systap. Onsekerheid in besigheid noop organisatoriese strukture om hul toenemend te wend na organisasiestrukture wat natuurlik voorkom, ten einde ‘n eiesoortige buigsame weergawe daarvan te skep. Organisatoriese herstrukturering is ewe belangrik as die hersiening van inligtingsvloei, die optimisering van tegnologie en bowenal, die soektog na die regte soort werknemer wat dryfkrag aan die ‘real-time enterprise’ of RTE sal verleen. ‘Real-time’ besprekings sluit noodwendig die tydskwessie in, terwyl enige nabetragting oor hiërargiese organisasies sal fokus op stabiliteit, maar ook op onbuigsaamheid en ontoereikende inligtingspraktyke. Die nuwe besigheidsrigting in ’n uiters mededingende omgewing laat min ruimte vir enige mate van organisatoriese onbuigsaamheid. Die vraag ontstaan egter hoe vinnig en gedrewe inligting verwerk kan word ten einde besigheidswaarde te vermeerder? RTE’s is nie volledig geoutomatiseerde organisasies nie. Hoewel werknemers nie ten volle betrek word by alledaagse werk nie, is hulle steeds deel van die besluitnemingsproses. Maar vergemaklik die RTE-besigheidsmodel inderdaad die verwerking van inligting deur gedeeltelike outomatisering? Hoe word spoed en tydsvermorsing in organisasies hanteer? Sou spoed byvoorbeeld ten alle koste die enigste belang wees van die RTE? Die doel van hierdie proefskrif is om hierdie vrae in beginsel te beantwoord. Die invloed van besigheidsonsekerheid op organisatoriese strukture wat die huidige denkwyse beïnvloed, word erken. Die aanduiding oor organisatoriese ontwikkeling is gebaseer op internasionale, gesaghebbende spesialisgeskrifte, besigheidsontledings, sowel as akademiese vertolkings. Voortreflike literatuur is bekom in professionele joernale oor die ontelbare nuanses van ‘real-time’ inligting. Castells se werk oor die netwerkgemeenskap was van onskatbare waarde vir ’n oorsigtelike insig, terwyl die jongste ontwikkelinge verkry is uit artikels afkomstig van gevestigde navorsingsinstansies. Die skrywer het gedurende die navorsingsfase slegs een proefskrif teengekom oor ‘real-time’ inligting met inligtingstegnologie as die hooffokus. Dit is duidelik dat toenemende navorsing steeds ontbreek. Die uiteindelike bevindings het ooreengestem met die ingewikkeldheid en omvang van die onderwerp. Die eise van ’n internasionale netwerk kan slegs beantwoord word deur ratse en aanpasbare netwerk organisasies, allermins deur hiërargieë. ’n Rol, pleks van ’n aanstelling, raak van toenemende belang in die organisatoriese oorgangsfase na ’n plat struktuur wat deel is van ’n netwerk. Versuim om te begin met so ’n oorgangsprogram sal mislukking tot gevolg hê in die geweldig mededingende besigheidsomgewing wat dwarsoor die wêreld heers. Die RTE is afhanklik van die daarstelling van ‘n balans tussen besighede as dele van ’n geheel in hul omgang met mekaar wat die nodige voorwaardes en vereistes insluit. Dis slegs binne hierdie raamwerk dat toegang tot ‘real-time’ inligting beskou kan word as ’n unieke faktor wat aan besigheidsorganisasies wêreldwyd gebied word.

A alta competitividade entre as organizações empresariais exige constante inovação e evolução em seus processos produtivos, necessitando que seus sistemas de informação sejam produzidos e modificados com a mesma agilidade. A elicitação dos requisitos, no entanto, ainda é feita por meio de métodos empíricos sem efetiva garantia de seu alinhamento com os problemas e necessidades inerentes ao negocio. Deste contexto, a Engenharia de Software necessita de mecanismos mais precisos para uma etapa, do processo de desenvolvimento, que é considerada crítica para o sucesso do desenvolvimento do software. Este trabalho realiza o desenvolvimento de uma abordagem para elicitação de requisitos de software por meio da notação para modelagem de negocio BPMN - Business Process Model and Notation, definida pela OMG - Object Management Group. Do ponto de vista da abordagem do problema é utilizada a pesquisa qualitativa, pois privilegia questões conceituais, padrões, opiniões expressas e suas respectivas análises e, sob o ponto de vista dos procedimentos técnicos, é baseada em estudos de caso. Como resultado desta dissertação foi criada uma abordagem para a elicitação de requisitos para o desenvolvimento de sistemas de informação baseado na notação BPMN para a modelagem de processos de negócios. Com a finalidade de verificar a viabilidade da utilização da abordagem proposta, foram realizados estudos de caso. / High competitivity among business organizations demands constant inovation and evolution of productive processes of companies, also pushing the same agility to development and modification of information systems. Besides that, elicitation of software requirements are still made using empiric methods without a warranty of its alignment with business problems and needs. Software Engineering needs better and precise mechaninsms to be used on a phase which is considered critical to the success of software development. This work realize the development of an approach to software requirements elicitation using BPMN - Business Process Model and Notation, defined by OMG - Object Management Group. As an approach to the problem, qualitative research will be used as it favors conceptual questions, patterns, opinions and its respective analysis, and on behalf technical procedures its based on study cases. As result of this research, an approach to elicitation of information systems development requirements was built based on BPMN notation to model business process. In order to check the feasibility of using the proposed approach, were made case studies.

A alta competitividade entre as organizações empresariais exige constante inovação e evolução em seus processos produtivos, necessitando que seus sistemas de informação sejam produzidos e modificados com a mesma agilidade. A elicitação dos requisitos, no entanto, ainda é feita por meio de métodos empíricos sem efetiva garantia de seu alinhamento com os problemas e necessidades inerentes ao negocio. Deste contexto, a Engenharia de Software necessita de mecanismos mais precisos para uma etapa, do processo de desenvolvimento, que é considerada crítica para o sucesso do desenvolvimento do software. Este trabalho realiza o desenvolvimento de uma abordagem para elicitação de requisitos de software por meio da notação para modelagem de negocio BPMN - Business Process Model and Notation, definida pela OMG - Object Management Group. Do ponto de vista da abordagem do problema é utilizada a pesquisa qualitativa, pois privilegia questões conceituais, padrões, opiniões expressas e suas respectivas análises e, sob o ponto de vista dos procedimentos técnicos, é baseada em estudos de caso. Como resultado desta dissertação foi criada uma abordagem para a elicitação de requisitos para o desenvolvimento de sistemas de informação baseado na notação BPMN para a modelagem de processos de negócios. Com a finalidade de verificar a viabilidade da utilização da abordagem proposta, foram realizados estudos de caso. / High competitivity among business organizations demands constant inovation and evolution of productive processes of companies, also pushing the same agility to development and modification of information systems. Besides that, elicitation of software requirements are still made using empiric methods without a warranty of its alignment with business problems and needs. Software Engineering needs better and precise mechaninsms to be used on a phase which is considered critical to the success of software development. This work realize the development of an approach to software requirements elicitation using BPMN - Business Process Model and Notation, defined by OMG - Object Management Group. As an approach to the problem, qualitative research will be used as it favors conceptual questions, patterns, opinions and its respective analysis, and on behalf technical procedures its based on study cases. As result of this research, an approach to elicitation of information systems development requirements was built based on BPMN notation to model business process. In order to check the feasibility of using the proposed approach, were made case studies.

The purpose of this study was to analyze the reliability and validity of three achievement tests, with emphasis given to instructional validity. The tests were used to assess the performance of Business Computer Applications (BCA) students on their achievement of knowledge of computer application software concepts and vocabulary for word processing, spreadsheet, and database. Five concepts and vocabulary categories addressed included: vocabulary, access software, data/text entry, editing, and formatting. Data were also collected from BCA teachers of the students. Teachers were asked to rate each item for the three software types of the achievement test as to whether the concepts and vocabulary corresponding to that item had been taught. A selected sample was used in the study. Classes were divided into three approximately even student groups. Each group completed one of the tests for each software type. Percentage of items correct for the three software types were 53%-word processing, 46%- spreadsheet, and 36%-database. The Kuder-Richardson 20 (KR-20) estimates for the software types were .92--word processing, .92--spreadsheet, and .76--database. Due to a wide dispersion of KR-20 values for items within the 5 concepts and vocabulary categories by software, the items are useful only for group measures. Most of the 8 teachers did not teach a substantial part of the concepts and vocabulary included in the validated test items. This outcome indicates the curriculum related to the items needs to be examined and revised so that teachers can emphasize the most important concepts and vocabulary with their students. Analyses outcomes indicated that 59 of 60 word processing items, 51 of the 59 spreadsheet items, and 45 of the 59 database items were instructionally valid. Teachers selecting items for purposes of examining the achievement of their students related to software concepts and vocabulary cam effectively use items determined to be instructionally valid in this study. / Ph. D.

This dissertation focuses on the re-use of business process reference models, available in a business process model warehouse, to enable the definition of more comprehensive business requirements. It proposes a business process model warehouse framework to promote the re-use of multiple business process reference models and the flexible visualisation of business process models. The critical success factor for such a framework is that it should contribute to minimise to some extent the causes of inadequate business requirements. The proposed framework is based on an analogy with a data warehouse framework, consisting of the following components: usage of multiple business process reference models as source models, the conceptual design of a process to extract, load and transform multiple business process reference models into a repository, a description of repository functionality for managing enterprise architecture artefacts, and motivation of flexible visualisation of business process models to ensure more comprehensive business requirements. / Computer Science (School of Computing) / M.Sc. (Information Systems)

Capes / O presente estudo tem como objetivo identificar e analisar comparativamente os principais processos de negócio de empresas de pequeno porte do subsetor de edificações da construção civil. Para tanto, foi utilizado o método de pesquisa qualitativa e estudo de casos múltiplos como técnica principal. Participaram deste trabalho, cinco empresas que estão localizadas na cidade de Curitiba, Paraná. Para a coleta de dados, foram realizadas entrevistas semi-estruturadas, análises de documentos e observações diretas. A partir das informações obtidas, desenvolveu-se graficamente o mapeamento dos processos de negócio de cada empresa utilizando-se a notação BPMN. O estudo mostrou que os processos e as atividades das empresas deste setor apresentam características comuns, facilitando assim, a padronização das melhores práticas. Com o estudo de outros casos, surgirão outros aspectos semelhantes que poderão ser utilizados na elaboração de um modelo de referência que apresenta orientação específica sobre como os processos de negócio podem ser gerenciados nas organizações do subsetor de edificações. / The present study has as objective to identify and analyze comparatively the main business processes of small companies of the subsector of edifications of the civil construction. Therefore, was used the qualitative research method and multiple case study as the main technique. Participated of this work, five companies that are located in the city of Curitiba, Paraná. For data collection were performed semi-structured interviews, document analysis and direct observations. From the information obtained, developed graphically mapping the business processes of each company using the BPMN notation. The study showed that the processes and activities of companies in this sector present common characteristics, thus facilitating the standardization of best practices. With the study of other cases will arise other similar aspects that could be used in the preparation of a reference model that provide specific guidance on how business processes can be managed in organizations of the subsector of edifications.

This dissertation focuses on the re-use of business process reference models, available in a business process model warehouse, to enable the definition of more comprehensive business requirements. It proposes a business process model warehouse framework to promote the re-use of multiple business process reference models and the flexible visualisation of business process models. The critical success factor for such a framework is that it should contribute to minimise to some extent the causes of inadequate business requirements. The proposed framework is based on an analogy with a data warehouse framework, consisting of the following components: usage of multiple business process reference models as source models, the conceptual design of a process to extract, load and transform multiple business process reference models into a repository, a description of repository functionality for managing enterprise architecture artefacts, and motivation of flexible visualisation of business process models to ensure more comprehensive business requirements. / Computer Science (School of Computing) / M.Sc. (Information Systems)

This study explores complexity metrics for business artifact process models described by Case Management Model and Notation (CMMN). Process models are usually described using Business Process Management (BPM), which is a relatively mature discipline with a large number of practitioners. Over the last few decades a new way of describing data intensive business processes has emerged in BPM literature, for which traditional BPM is no longer adequate. This emerging method, used to describe more flexible processes, is called business artifacts with Guard-Stage-Milestone (GSM). The work on GSM influenced CMMN, which was created to fill a market need for more flexible case management processes for knowledge workers. Complexity metrics have been developed for traditional BPM models, such as the Business Process Model and Notation (BPMN). However, traditional BPM is not suitable for describing GSM or CMMN process models. Therefore, complexity metrics developed for traditional process models may not be applicable to business artifact process models such as CMMN. This study addresses this gap by exploring complexity metrics for business artifact process models using CMMN. The findings of this study have practical implications for the CMMN standard and for the commercial products implementing CMMN. This research makes the following contributions: • The development of a formal description of CMMN using first-order logic. • An exploration of the relationship between CMMN and GSM and the development of transformation procedures between them. • A comparison between the method complexity of CMMN and other popular process methods, including BPMN, Unified Modeling Language (UML) Activity diagrams, and Event-driven Process Charts (EPC). • The creation of a systematic literature review of complexity metrics for process models, which was conducted in order to inform the creation of CMMN metrics. • The identification of a set of complexity metrics for the CMMN standard, which underwent theoretical and empirical validation. This research advances literature in the areas of method complexity, complexity metrics for process models, declarative processes, and research on CMMN by characterizing CMMN method complexity, identifying complexity metrics for CMMN, and exploring the relationship between CMMN and GSM. / Ph.D. (Computer Science)

Capes / O presente estudo tem como objetivo identificar e analisar comparativamente os principais processos de negócio de empresas de pequeno porte do subsetor de edificações da construção civil. Para tanto, foi utilizado o método de pesquisa qualitativa e estudo de casos múltiplos como técnica principal. Participaram deste trabalho, cinco empresas que estão localizadas na cidade de Curitiba, Paraná. Para a coleta de dados, foram realizadas entrevistas semi-estruturadas, análises de documentos e observações diretas. A partir das informações obtidas, desenvolveu-se graficamente o mapeamento dos processos de negócio de cada empresa utilizando-se a notação BPMN. O estudo mostrou que os processos e as atividades das empresas deste setor apresentam características comuns, facilitando assim, a padronização das melhores práticas. Com o estudo de outros casos, surgirão outros aspectos semelhantes que poderão ser utilizados na elaboração de um modelo de referência que apresenta orientação específica sobre como os processos de negócio podem ser gerenciados nas organizações do subsetor de edificações. / The present study has as objective to identify and analyze comparatively the main business processes of small companies of the subsector of edifications of the civil construction. Therefore, was used the qualitative research method and multiple case study as the main technique. Participated of this work, five companies that are located in the city of Curitiba, Paraná. For data collection were performed semi-structured interviews, document analysis and direct observations. From the information obtained, developed graphically mapping the business processes of each company using the BPMN notation. The study showed that the processes and activities of companies in this sector present common characteristics, thus facilitating the standardization of best practices. With the study of other cases will arise other similar aspects that could be used in the preparation of a reference model that provide specific guidance on how business processes can be managed in organizations of the subsector of edifications.