Klas, W., Aberer, K. "Multimedia Applications and Their Implications on Database Architectures," GMD Technical Report 95-20. klas@darmstadt.gmd.de Home/Search Document Details and Download
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Edited Book Title - Edited By Boston (1996) (Correct)
....determine three aspects of the data the DBMS aims to manage: the data structures, the operations defined on them and the constraints to be satisfied by the data structures and operations. In the case of multimedia data, the data structures should support continuous data streams (e.g. audio, video) [KLA95], the behaviour characteristics should include all the functionality of multimedia objects putting emphasis on their spatial and temporal transformations. A MM DBMS should involve all the aspects of storage, retrieval, transformation, composition and presentation of multimedia objects and ....
W. Klas, K. Aberer, "Multimedia Applications and their implications on Database Architectures", proceedings of Advances Course on Multimedia Databases in Perspective, Un. of Twente, Netherlands, 1995, pp. 19-72.
The Roles and Views of Multimedia Objects - Wong, Chau, Lochovsky (1996) (Correct)
.... also the reason why most approaches for multimedia database systems follow object oriented principles (e.g. 1, 5, 9, 13, 15, 17, 27] However, the conventional object oriented approach still lacks some features such as supporting time dependent data, content based query and retrieval techniques [16], etc. In particular, it does not support the concept of roles. In this paper, we propose the use of roles and views in a dynamic object oriented programming language, called DOOR [30, 31, 32] to model multimedia objects. The standard object oriented data model is not satisfactory when entities, ....
....they provide the right level of abstraction of the resources, data distribution and data representation. Views are also important because they provide different views of the same data, e.g. to realize the often mentioned distinction between internal and external representation of multimedia data [16]. In DOOR, views are used to provide different views and abstractions of a multimedia object, and roles are used to model the specialization of a multimedia object. In other words, we regard objects and roles (but not views) as logical entities, and we regard views as presentations of these ....
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W. Klas and K. Aberer. Multimedia applications and their implications on database architectures. In Advanced Course on Multimedia Databases in Perspective. University of Twente, The Netherlands, 1995.
Query Languages in Multimedia Database Systems - Li, Özsu, Szafron (1995) (5 citations) (Correct)
....performance of multimedia system. Some important quality of service parameters are average delay, speed ratio (between the original intended and the actually achieved) data utilization, jitter (the temporal deviation of two simultaneous presentations at a certain point in time) and reliability [KA95] The query language has to deal with the integration of all retrieved objects of different media types in a synchronized way. For example, consider displaying a sequence of video frames in which someone is speaking, and playing a sequence of speech samples in a news on demand video system. The ....
W. Klas and K. Aberer. Multimedia applications and their implications on database architectures. In P. Apers and H. Blanken, editors, Advanced Course on Multimedia Databases in Perspective, The Netherlands, 1995. University of Twente.
Experiences with the Electronic Classroom - QoS Issues in an .. - Plagemann, Goebel (1997) (5 citations) (Correct)
....and transaction management. Common for all multimedia applications is that they have to manage multimedia data, i.e. data of various media types (e.g. text, graphics, still images, video, audio, or animations) that are often related to each other (e.g. synchronization of video and audio) [8]. Until now, plain file systems and simple storage servers have been used for data management in distributed multimedia systems (e.g. Video on Demand systems) Obviously, this is a pragmatic short cut and only appropriate for very special application domains. In general, MMDBSs are necessary ....
Klas, W., Aberer, K.: Multimedia Applications and Their Implications on Database Architectures, in: Advanced Course on Multimedia Databases in Perspective, University of Twente, The netherlands, 1995
Integrated Database Services for Multimedia Presentations - Boll, Klas, Löhr (1996) (2 citations) Self-citation (Klas) (Correct)
....the continuous data types arises. Many applications use file systems to store multimedia data. It has become clear, however, that neither conventional file systems nor traditional database management systems can effectively create, store, manipulate, and present the data of multimedia applications [17, 26, 24, 6]. The concepts of database management systems nevertheless seem to be reasonable for a uniform handling of multimedia data. Database management system support is of special interest if complex data structures must be managed and several users need to access this data. To provide reliable ....
W. Klas and K. Aberer. Multimedia Applications and Their Implications on Database Architectures. In Advanced Course on Multimedia Databases in Perspective. University of Twente, The Netherlands, June 1995.
Requirements for MMDBMS - Pazandak, Srivastava (1996) (Correct)
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Klas, W., Aberer, K. "Multimedia Applications and Their Implications on Database Architectures," GMD Technical Report 95-20. klas@darmstadt.gmd.de
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