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| Tekijä: | Parsons, J. |
| Otsikko: | Effects of local versus global schema diagrams on verification and communication in conceptual data modeling |
| Lehti: | Journal of Management Information Systems
2003 : WINTER, VOL. 19:3, p. 155-183 |
| Asiasana: | Classification and coding Communication Data base management Data management Integration |
| Kieli: | eng |
| Tiivistelmä: | Local schemas of conceptual data modeling are argued to be important in verifying conceptual data requirements before proceeding to database design. View integration is claimed to fulfill two purposes: 1) a global conceptual schema is prerequisite to logical design and implementation and 2) global schemas are thought to be useful in improving organizational communication among diverse user groups with different perspectives and information needs. However, performing a view integration is difficult. Moreover, there is no empirical evidence that global schemas either impede local verification or support communication. Drawing on classification research, claims about the impact of schema structure (local vs. global) on verification and communication are developed and tested in this paper. |
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