R. D. Semmel, "Discovering Context in an Entity Relationship Conceptual Schema", Journal of Computer and Software Engineering, 2(1) (1994) 47-63. Home/Search Document Not in Database Summary Related Articles Check |
This paper is cited in the following contexts:
Knowledge-Based Information Access - Karlson, Semmel, al. Self-citation (Semmel) (Correct)
....reslove the shortcomings of the universal relation model, but still failed to provide the richness of expression needed for generalized queries. Although many variations on intelligent interfaces have been explored and implemented, we will refer to the QUICK intelligent database access system [27] in our examples. QUICK uses knowledge extracted from the conceptual model to automate query generation, effectively eliminating the requirement that users be intimately familiar with the databases from which they retrieve data. QUICK relies on an extended entity relationship (EER) ....
....the grouping mechanism used by QUICK, which can be considered an extension of maximal objects to EER objects. Contexts QUICK analyzes the conceptual model to identify contexts, which are sets of strongly associated conceptual model objects [39] including entities, attributes, and relationships [27]. The strengths of the associations are determined heuristically from the model notation, but conceptually represent the designer s intent with respect to the interrelationships among objects. Figure 3 shows the contexts for the on line store as two rounded rectangles enclosing two subsets of ....
R. D. Semmel, "Discovering Context in an Entity Relationship Conceptual Schema", Journal of Computer and Software Engineering, 2(1) (1994) 47-63.
Knowledge-Based Query Formulation for Integrated.. - Semmel, Immer.. (1997) Self-citation (Semmel) (Correct)
No context found.
Semmel, R. D., "Discovering Context in an Entity-Relationship Conceptual Schema," J. Comput. Software Eng. 2(1), 47--63 (1994).
Using Relationship Roles to Disambiguate Conceptual-Level.. - Silberberg, Semmel Self-citation (Semmel) (Correct)
....is advantageous as a join is typically the most difficult part of a query. QUICK uses an extended entity relationship (EER) model [1,11] to represent conceptual database schemas. It identifies schema contexts, which are maximal sets of strongly related entities, relationships, and generalizations [10]. Contexts are constructed by analyzing the relationship cardinalities and generalization types and grouping the schema objects into sets which can be queried in a meaningful way as defined by the schema s designer. A context can be treated as a single, meaningful projection of the database. The ....
Semmel, R.D. 1994. "Discovering Context in an Entity-Relationship Conceptual Schema," Journal of Computer and Software Engineering, 2:1, pp. 47-63.
Role-Based Semantics for Conceptual-Level Queries - Silberberg, Semmel (1998) Self-citation (Semmel) (Correct)
....the universal relation model. Some commercial systems attempt to solve the same problem using ER constructs [Har98] Ora98] All, however, still failed to provide the richness of expression needed for generalized queries. Problems with the previous systems were overcome by the development of QUICK [Sem94], which is an intelligent data access system that simplifies the process of query formulation for application programmers and users that require an ad hoc query interface to a database. It extracts domain knowledge from a database conceptual schema and uses it to automatically formulate SQL ....
Semmel, R.D. "Discovering Context in an Entity-Relationship Conceptual Schema," Journal of Computer and Software Engineering, 2:1, pp. 47-63. 1994.
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