Multimedia Database Systems — The Notions and the Issues

Rakow, Thomas C.; Neuhold, Erich J.; Löhr, Michael

doi:10.1007/978-3-642-79646-3_1

Cited by 18 publications

(4 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Multimedia databases may adopt the following characteristics to index images: signatures derived from (manually captured) keywords describing the image, color, texture or brightness distributions, etc. [9]…”

Section: Related Work 21 Data Integrationmentioning

confidence: 99%

Web data modeling for integration in data warehouses

Miniaoui,

Darmont,

Boussaïd

2007

Preprint

View full text Add to dashboard Cite

In a data warehousing process, the data preparation phase is crucial. Mastering this phase allows substantial gains in terms of time and performance when performing a multidimensional analysis or using data mining algorithms. Furthermore, a data warehouse can require external data. The web is a prevalent data source in this context, but the data broadcasted on this medium are very heterogeneous. We propose in this paper a UML conceptual model for a complex object representing a superclass of any useful data source (databases, plain texts, HTML and XML documents, images, sounds, video clips...). The translation into a logical model is achieved with XML, which helps integrating all these diverse, heterogeneous data into a unified format, and whose schema definition provides first-rate metadata in our data warehousing context. Moreover, we benefit from XML's flexibility, extensibility and from the richness of the semistructured data model, but we are still able to later map XML documents into a database if more structuring is needed.

show abstract

Section: Related Work 21 Data Integrationmentioning

confidence: 99%

Web data modeling for integration in data warehouses

Miniaoui,

Darmont,

Boussaïd

2007

Preprint

View full text Add to dashboard Cite

show abstract

“…In general, video servers employs disk-array-based system to meet both storage capacity and bandwidth [8]. Thus, they can provide the aggregated storage capacity and bandwidth by accessing disks in parallel as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Supporting Dynamic Relocation of Video Data in Disk-Array-Based Video Servers

Kim

Kwon²,

Nah

et al. 1997

Database Systems for Advanced Applications '97

View full text Add to dashboard Cite

Although modification operations on multimedia data such as insertion and/or deletion of video clips are rare, they may cause significant degradation of disk I/O performance in disk-array-based video servers. This is because many existing disk-array-based video servers consider only video playback at normal speed and retrieval-oriented VCR-like operations such as fast-forward and rewind without considering relocation of video data. Most conventional video servers provide optimal performance using static placement of video data on multiple disks. In this paper, we propose a method called 'SRM (Segment Relocation Method)' which provides uniform loadbalance of disks regardless of the dynamic modification of stored video objects. For modification operations, the segments belonging to the corresponding 'round' of disk placement are relocated so that the system guarantees uniform load-balance of multiple disks in all rounds. To justify the significance of the relocation scheme, we evaluate and compare the cost of retrieval in terms of the required buffer size and the number of admitted users.

show abstract

“…This is due to the availability of hardware and software tools (high bandwidth networks, new storage devices and technologies,...) for handling digital video and audio data. The advantages of digital storage of continuous data are numerous [13]. In fact, many applications use continuous data, ranging from professional activities to entertainment.…”

Section: Introductionmentioning

confidence: 99%

The Design of a High Performance Video Server for Managing TV Archives

Mostefaoui

1997

Electronic Workshops in Computing

View full text Add to dashboard Cite

One of the key components in a multimedia interactive system is the continuous media server. In this paper, we first present the design and the architecture of such a server dedicated to support the storage, retrieval and delivery of video streams. The main feature of the proposed server is its independence of any physical configuration, so guaranteeing its portability. After that, based on the target application (video repositories), we have proposed a new scheduling technique that takes into account the data structuration. To cope with the difficulties implied by the content-based retrieving, a modeling process divides a video in several overlapping streams. We argue that the server can use this knowledge in order to promote media sharing between users requesting overlapped streams. The simulation results show the effectiveness of the proposed approach.

show abstract

Multimedia Database Systems — The Notions and the Issues

Cited by 18 publications

References 18 publications

Web data modeling for integration in data warehouses

Web data modeling for integration in data warehouses

Supporting Dynamic Relocation of Video Data in Disk-Array-Based Video Servers

The Design of a High Performance Video Server for Managing TV Archives

Contact Info

Product

Resources

About