| O. Deux et al. The story of O 2 . IEEE Trans. on Knowledge and Data Engineering, 2(1):91--108, March 1990. Special Issue on Prototype Systems. |
....concepts. This is no surprise, since these new models also typically include ways of nesting objects into others. Some of the models and query languages are either direct followups of the work on nested relations complex objects or at least have been developed in the same research group (such as [16, 41, 112, 111, 49, 33]) Others, even though developed independently, show the same similarities (for example [80, 12, 130, 116, 8, 124, 73] This is a clear indication that the results on complexity, expressive power, optimization, and implementation issues obtained in the context of nested relations complex objects ....
O. Deux et al. The story of O 2 . IEEE Trans. on Knowledge and Data Engineering, 2(1):91--108, March 1990. Special Issue on Prototype Systems.
....itself, we have to cope with object sharing. Otherwise, we have to restrict the update operations. In object oriented models, updates are usually carried out by applying methods (see [3, 6] That is, integrity preserving updates are offered to clients. In most object oriented models (see e.g. [8, 14, 21]) these updates are built upon predefined C or Smalltalk m n upd 1 n upd m 1 upd 1 1 upd thread 1 thread n ; state a state b Figure 1: Transformation of state a to b by the update apply to all [upd 1 ; upd m ] fo 1 ; ong) functions (like create, destroy) and assignments, ....
O. Deux et al. The story of O2 . IEEE Trans. on Knowledge and Data Engineering, 2(1):91--108, March 1990. Special Issue on Prototype Systems.
No context found.
O. Deux et al. The story of O 2 . IEEE Trans. on Knowledge and Data Engineering, 2(1):91--108, March 1990. Special Issue on Prototype Systems.
No context found.
O. Deux et al. The story of O 2 . IEEE Trans. on Knowledge and Data Engineering, 2(1):91--108, March 1990. Special Issue on Prototype Systems.
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