{"title":"An overview of the ASU engineering database project: interoperability in engineering design","authors":"S. Urban, J. Shah, M. Rogers","doi":"10.1109/RIDE.1993.281942","DOIUrl":"https://doi.org/10.1109/RIDE.1993.281942","url":null,"abstract":"The paper presents a work-in-progress report on work addressing interoperability in engineering design environments. The work is being conducted as a joint research effort between computer science and mechanical engineering researchers for the purpose of (1) creating a more productive environment for relating and accessing data in the engineering design process and (2) advancing database technology to adequately support interoperability issues in engineering design. The first six months of the project have primarily served as an organizational period, surveying database issues, learning about engineering design, and examining current efforts in engineering data exchange standards. The paper presents an overview of the research directions.<<ETX>>","PeriodicalId":302564,"journal":{"name":"Proceedings RIDE-IMS `93: Third International Workshop on Research Issues in Data Engineering: Interoperability in Multidatabase Systems","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122991896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Integration of relational databases in a multidatabase system based on schema enrichment","authors":"D. Keim, H. Kriegel, Andreas Miethsam","doi":"10.1109/RIDE.1993.281939","DOIUrl":"https://doi.org/10.1109/RIDE.1993.281939","url":null,"abstract":"The authors describe a framework for an object-oriented modeling of meta information and its use for the integration of heterogeneous databases with the goal of their interoperation. The meta information consists of all types of information necessary to access and interoperate the participating databases. As part of the meta information, they model the common properties and differences of the various data models and concrete systems. Additionally, they also include information to semantically enhance the schemas of the participating databases providing the basis for a (semi-)automatic schema transformation. They describe the semantic richment of a relational schema using additional information deduced from its underlying entity-relationship design schema. The enhanced relational schemas may be automatically transformed into corresponding schemas in the common data model which in this case is the object-oriented model. Queries using the created object-oriented schema may be automatically translated into equivalent SQL queries for the original relational schema.<<ETX>>","PeriodicalId":302564,"journal":{"name":"Proceedings RIDE-IMS `93: Third International Workshop on Research Issues in Data Engineering: Interoperability in Multidatabase Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128736560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A mathematical model of meaning and its application to multidatabase systems","authors":"T. Kitagawa, Y. Kiyoki","doi":"10.1109/RIDE.1993.281933","DOIUrl":"https://doi.org/10.1109/RIDE.1993.281933","url":null,"abstract":"One of the most important issues in the multidatabase research is semantic heterogeneity in autonomous databases. The authors propose a new model for realizing semantic interoperability among data items in multidatabase systems. In multidatabase systems, it is not easy to select appropriate databases and extract significant information for user's requests from many databases which are managed independently by its own database management system. One of the hardest problems is that it is difficult to judge equivalence or similarity between data items which are included in different databases. To select appropriate databases and extract significant information for user's requests, they have designed a meta database system. In this system. a mathematical model of meaning is used to find different data items with the equivalent or similar meaning or to recognize the different meanings of a data item. The mathematical model of meaning consists of: (1) defining a normal space, (2) constructing a class of projections which represents a phase of meaning, (3) constructing a mechanism to select a subspace of the normed space according to the context. The main feature of this model is that the specific meaning of a data item can be recognized disambiguously and dynamically according to the context.<<ETX>>","PeriodicalId":302564,"journal":{"name":"Proceedings RIDE-IMS `93: Third International Workshop on Research Issues in Data Engineering: Interoperability in Multidatabase Systems","volume":"214 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121847756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Querying uncertain data in heterogeneous databases","authors":"P. S. Tsai, Arbee L. P. Chen","doi":"10.1109/RIDE.1993.281929","DOIUrl":"https://doi.org/10.1109/RIDE.1993.281929","url":null,"abstract":"In heterogeneous databases, the user may issue a query to joint two relations in different databases on the keys. However, the keys may be incompatible. The authors extend results on probabilistic query processing to consider joining two relations with incompatible keys. A new approach to identify the 'same' entities in different relations is proposed. Various data and schema conflicts such as missing data, inconsistent data and domain mismatch are considered in the identification process. Probabilistic techniques are used to estimate the sameness of two entities, to process queries, and to estimate the degree of uncertainty for the query results.<<ETX>>","PeriodicalId":302564,"journal":{"name":"Proceedings RIDE-IMS `93: Third International Workshop on Research Issues in Data Engineering: Interoperability in Multidatabase Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126573346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Bouguettaya, R. King, Douglas Galligan, Jon Simmons
{"title":"Implementation of interoperability in large multidatabases","authors":"A. Bouguettaya, R. King, Douglas Galligan, Jon Simmons","doi":"10.1109/RIDE.1993.281953","DOIUrl":"https://doi.org/10.1109/RIDE.1993.281953","url":null,"abstract":"Sharing information among databases has traditionally been at the data level. In a large network of databases and with the current technology, direct data sharing, i.e. sharing actual data in one single step, is no longer tractable or even possible. Another layer of data sharing has to be supplied before direct data sharing can take place. The size issue is a major factor in complicating issues of autonomy and heterogeneity. In this new environment, users need to be incrementally and dynamically informed about available information and where it is located. A static approach to user education cannot be reasonable in such a large environment. This approach relies on building a new layer that is responsible for organizing databases in suitable and flexible conglomerations. This layer is implemented using special-purpose databases. These are called co-databases.<<ETX>>","PeriodicalId":302564,"journal":{"name":"Proceedings RIDE-IMS `93: Third International Workshop on Research Issues in Data Engineering: Interoperability in Multidatabase Systems","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125475415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Discovering interdatabase resemblance of classes for interoperable databases","authors":"M. García-Solaco, M. Castellanos, F. Saltor","doi":"10.1109/RIDE.1993.281949","DOIUrl":"https://doi.org/10.1109/RIDE.1993.281949","url":null,"abstract":"The integration of database schemas into a federated one involves a detection phase where the similarities that exist among the classes of the different databases must be discovered in order to determine their semantic relationships. This phase is typically characterized by the complexity of the comparison task and the deep knowledge about the semantics of the databases that is required to perform it. The authors present an approach to handle this problem by upgrading the semantic level of the local schemas and guiding the search of the comparison process by the structure of the generalization/specialization semilattices and aggregation graphs of the resulting rich schemas. Unnecessary as well as most promising comparisons are identified and a systematic procedure to analyze the rich component schemas in a meaningful way is given. A reduction of the complexity is achieved. The methodology serves as the basis for a tool that semiautomatizes the process. The expressiveness of the canonical model plays a central role.<<ETX>>","PeriodicalId":302564,"journal":{"name":"Proceedings RIDE-IMS `93: Third International Workshop on Research Issues in Data Engineering: Interoperability in Multidatabase Systems","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127499328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Knowledge-base/database consistency in a federated multidatabase environment","authors":"Leonard J. Seligman, L. Kerschberg","doi":"10.1109/RIDE.1993.281950","DOIUrl":"https://doi.org/10.1109/RIDE.1993.281950","url":null,"abstract":"The paper describes a new approach to maintaining consistency between objects which reside in dynamic, shared databases and copies of those objects which are cached in application knowledge-bases. The approach relies on an intelligent interface to active databases, a mediator for approximate consistency (MAC). The MAC permits applications to specify their consistency requirements declaratively, using a simple extension of a frame-based representation language. It then automatically generates the interfaces and database objects necessary to enforce those consistency requirements, shielding the knowledge-base developer from the implementation details of consistency maintenance. While the authors focus on knowledge-base/database consistency issues, the approach is applicable to any component of a multidatabase federation which needs to cache dynamic data and to enforce some degree of consistency between itself and other components in the federation.<<ETX>>","PeriodicalId":302564,"journal":{"name":"Proceedings RIDE-IMS `93: Third International Workshop on Research Issues in Data Engineering: Interoperability in Multidatabase Systems","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116996237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Joseph Albert, R. Ahmed, M. Ketabchi, W. Kent, M. Shan
{"title":"Automatic importation of relational schemas in Pegasus","authors":"Joseph Albert, R. Ahmed, M. Ketabchi, W. Kent, M. Shan","doi":"10.1109/RIDE.1993.281938","DOIUrl":"https://doi.org/10.1109/RIDE.1993.281938","url":null,"abstract":"The paper describes a technique for importing automatically an external relational schema into Pegasus, a heterogeneous, multidatabase system. The Pegasus data model is a functional object model which supports specialization, object-identity, and nested aggregation. The import algorithm generates the definition of a Pegasus schema which captures the semantics of a relational schema containing information about primary keys and referential integrity constraints. The algorithm described can be adapted easily for other semantic and object-oriented data models.<<ETX>>","PeriodicalId":302564,"journal":{"name":"Proceedings RIDE-IMS `93: Third International Workshop on Research Issues in Data Engineering: Interoperability in Multidatabase Systems","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122006307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Incremental data integration for federated databases","authors":"A. Watters","doi":"10.1109/RIDE.1993.281941","DOIUrl":"https://doi.org/10.1109/RIDE.1993.281941","url":null,"abstract":"The paper demonstrates how the experimental database language Proto derives and manipulates partial information representations and how these derivations may be used to merge information from a federation of databases. Partial information representations allow queries to be answered even in the event that ambiguity about relationships between the data from clients in a database federation cannot be resolved using available information. The language Proto is an implemented deductive extension to Common Lisp that allows the independent derivation of true and possible answers to queries, together with null values, including non-monotone introspective options that allow the inference system to use heuristics or defaults.<<ETX>>","PeriodicalId":302564,"journal":{"name":"Proceedings RIDE-IMS `93: Third International Workshop on Research Issues in Data Engineering: Interoperability in Multidatabase Systems","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127894389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Towards the design of semantic cooperation protocol in heterogeneous database systems","authors":"A. Ouksel, C. Naiman","doi":"10.1109/RIDE.1993.281925","DOIUrl":"https://doi.org/10.1109/RIDE.1993.281925","url":null,"abstract":"The problem of semantic reconciliation in heterogeneous databases is discussed. In general, semantic differences are context dependent. The context within which the semantics are interpreted must thus be clearly understood to facilitate reconciliation. Context can be refined by accumulating semantic information according to precedence relationships modeled after the steps of static schema integration.<<ETX>>","PeriodicalId":302564,"journal":{"name":"Proceedings RIDE-IMS `93: Third International Workshop on Research Issues in Data Engineering: Interoperability in Multidatabase Systems","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128102236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}