Evidence map›Paper›PMID 33266019›Full record

ReviewEntropy (Basel, Switzerland)2020

Application of Dynamic Fragmentation Methods in Multimedia Databases: A Review.

Felipe Castro-Medina, Lisbeth Rodríguez-Mazahua, Asdrúbal López-Chau, Jair Cervantes, Giner Alor-Hernández, Isaac Machorro-Cano

Abstract readReview
In one paragraph

Review in Entropy (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Felipe Castro-MedinaTecnológico Nacional de México/I. T. Orizaba, Division of Research and Postgraduate Studies, Av. Oriente 9 852. Col. Emiliano Zapata, C.P. 94320 Orizaba, Mexico.
Lisbeth Rodríguez-MazahuaTecnológico Nacional de México/I. T. Orizaba, Division of Research and Postgraduate Studies, Av. Oriente 9 852. Col. Emiliano Zapata, C.P. 94320 Orizaba, Mexico.
Asdrúbal López-ChauUniversidad Autónoma del Estado de México, Centro Universitario UAEM Zumpango, Camino viejo a Jilotzingo continuación Calle Rayón, Valle Hermoso, C.P. 55600 Zumpango, Estado de México, Mexico.
Jair CervantesUniversidad Autónoma del Estado de México, Centro Universitario UAEM Texcoco, Av. Jardín Zumpango, s/n, Fraccionamiento El Tejocote, C.P. 56259 Texcoco, Estado de México, Mexico.
Giner Alor-HernándezTecnológico Nacional de México/I. T. Orizaba, Division of Research and Postgraduate Studies, Av. Oriente 9 852. Col. Emiliano Zapata, C.P. 94320 Orizaba, Mexico.ORCID 0000-0003-3296-0981
Isaac Machorro-CanoUniversidad del Papaloapan, Circuito Central #200, colonia Parque Industrial, C.P. 68301 Tuxtepec, Oaxaca, Mexico.ORCID 0000-0002-3822-4478

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Fragmentation is a design technique widely used in multimedia databases, because it produces substantial benefits in reducing response times, causing lower execution costs in each operation performed. Multimedia databases include data whose main characteristic is their large size, therefore, database administrators face a challenge of great importance, since they must contemplate the different qualities of non-trivial data. These databases over time undergo changes in their access patterns. Different fragmentation techniques presented in related studies show adequate workflows, however, some do not contemplate changes in access patterns. This paper aims to provide an in-depth review of the literature related to dynamic fragmentation of multimedia databases, to identify the main challenges, technologies employed, types of fragmentation used, and characteristics of the cost model. This review provides valuable information for database administrators by showing essential characteristics to perform proper fragmentation and to improve the performance of fragmentation schemes. The reduction of costs in fragmentation methods is one of the most desired main properties. To fulfill this objective, the works include cost models, covering different qualities. In this analysis, a set of characteristics used in the cost models of each work is presented to facilitate the creation of a new cost model including the most used qualities. In addition, different data sets or reference points used in the testing stage of each work analyzed are presented.

Indexed as

cost modeldynamic fragmentationhorizontal fragmentationhybrid fragmentationliterature reviewmultimedia fragmentationvertical fragmentation

Identifiers

PMID33266019
PMCPMC7760714

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.