KACHEL, G., RADEKE, E., HEIJENGA, W. COMIC - A step toward future data models. Cadlab-Report 3/92, 1992. Home/Search Document Not in Database Summary Related Articles Check |
This paper is cited in the following contexts:
Concept and Architecture of a Distributed.. - Meckenstock.. (1992) (7 citations) (Correct)
.... be referred to as OMS (Ob ject Management System) FFH 90] and is based on the structural object oriented data model IDM (Internal Data Model) KKN89] By providing a corresponding conceptual level, the OMS can be extended to become an OODBMS with a full object oriented data model (COMIC [KHR92] TIDL [GBH 90] The OMS is used as the data handling component of the JESSI Common Framework (JCF) Ste92, Kat92] JCF is an open framework designed to support building, integrating, and configuring CAX environments. When designing a distributed OODBMS, one has to be concerned, among ....
G. Kachel, W. Heijenga, and E. Radeke. COMIC - A Step Toward Future Data Models. CADLAB External Report 3/92, 1992.
Object Migration in Federated Database Systems - Radeke, Scholl (1994) Self-citation (Radeke) (Correct)
....to the local object l1 and after object migration also instead to local object l2. Which data are migrated together with the object depends on the canonical data model of the FDBS and the object definition within this data model. Our solution is based on an object oriented data model, COMIC [9] which is very similar to the upcoming standard from ODMG [3] both in semantics and syntax of the interface (C oriented) The object notion of both models is as follows: 2 In some cases also transparent object migration is possible, see below. 3 An object consists of several attributes that ....
....the global FDBS interface here . We provide the users administrators with a set of operations to invoke object migration. First, we consider implicit migration operations which enable object migration by changing an object s class. These operations are already known from existing DBS (e.g. COMIC [9] and COCOON [19] and FDBS (e.g. O SQL [12] While these functions allow a transparent object migration, they restrict on the operation primitives absolute movement replication and on the migration degree globally complete and, moreover, require specific type mappings. Therefore we add explicit ....
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KACHEL, G., RADEKE, E., HEIJENGA, W. COMIC - A step toward future data models. Cadlab-Report 3/92, 1992.
Functionality for Object Migration Among Distributed.. - Radeke, Scholl (1995) (2 citations) Self-citation (Radeke) (Correct)
....dynamic migration of data in various granularities. 5.1 Base Operations We distinguish two kinds of migration operations: implicit and explicit. Implicit migration operations enable object migration by changing an objects class. These operations are already known from existing DBS, e.g. COMIC [7] and COCOON [17] In FDBS, they require an object migration if the classes are mapped to different CDBS during schema integration. Although an FDBS approach, namely O SQL [8] includes class change operations, the underlying object migration was not elaborated. We fill this gap by specifying class ....
....to be considered during the migration can be restricted by the user. He can limit (1) the relationship kind (2) can specify a specific relationship. A restriction on some relationship kinds is ingenious if the canonical data model of the FDBS offers multiple relationship kinds. For example, COMIC [7] offers general relationships (called relate) and part of relationships (contain) while PCTE [5] distinguishes five predefined relationship kinds and allows users to specify some further kinds. Then only relationships of the user specified kind are considered. It can also be limited on specific ....
KACHEL, G., RADEKE, E., HEIJENGA, W. COMIC - A step toward future data models. Cadlab-Report 3/92, 1992.
Framework for Object Migration in Federated Database Systems - Radeke, Scholl (1994) (3 citations) Self-citation (Radeke) (Correct)
....to retain the global identity of the migrated object (detailed differences see below) Which data are migrated together with the object depends on the canonical data model of the FDBS and the object definition within this data model. Our solution is based on an object oriented data model, COMIC [10] which is very similar to the upcoming standard of ODMG [3] both in semantics and syntax of the interface (C oriented) The object notion of both models is as follows: An object consists of several attributes that express its structure and owns some methods describing the object s behavior. We ....
KACHEL, G., RADEKE, E., HEIJENGA, W. COMIC - A step toward future data models. CadlabReport 3/92, 1992.
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