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A NoSQL–SQL Hybrid Organization and Management Approach for Real-Time Geospatial Data: A Case Study of Public Security Video Surveillance

Chen Wu, Qing Zhu, Yeting Zhang, Zhiqiang Du, Xinyue Ye, Han Qin, Yan Zhou
2017 ISPRS International Journal of Geo-Information  
The DFS on disk manages the massive geospatial data, and the extensible storage architecture and distributed scheduling of a NoSQL database satisfy the performance requirements of incremental storage and  ...  This limits its capability for on-the-fly access of real-time geospatial data for online analysis in real time.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/ijgi6010021 fatcat:nax7wcpxcra3zaz7x4qvx5eyfe

Towards Multiverse Databases

Alana Marzoev, Lara Timbó Araújo, Malte Schwarzkopf, Samyukta Yagati, Eddie Kohler, Robert Morris, M. Frans Kaashoek, Sam Madden
2019 Proceedings of the Workshop on Hot Topics in Operating Systems - HotOS '19  
This transformed view of the entire database contains only information allowed by a centralized and easily-auditable privacy policy.  ...  Multiverse databases' per-user transformations risk expensive queries if applied dynamically on reads, or impractical storage requirements if the database proactively materializes policy-compliant views  ...  Acknowledgements We thank the anonymous reviewers and members of the MIT PDOS group for helpful comments on earlier versions of the paper.  ... 
doi:10.1145/3317550.3321425 dblp:conf/hotos/MarzoevASYKMKM19 fatcat:juer3mguybaklbhudkuou4o4aq

Workload-aware aggregate maintenance in columnar in-memory databases

Stephan Muller, Lars Butzmann, Stefan Klauck, Hasso Plattner
2013 2013 IEEE International Conference on Big Data  
This speed-up, however, comes with the cost of materialized view maintenance which is necessary to guarantee consistency when the underlying data changes.  ...  While several view maintenance strategies are applicable in the context of an in-memory column store, their performance depends on various factors, most importantly the ratio between queries accessing  ...  Access to tuples of a materialized view is always faster than computing the view on the fly.  ... 
doi:10.1109/bigdata.2013.6691699 dblp:conf/bigdataconf/MullerBKP13 fatcat:zdtsa7di2rgwlameqmqp2rtgp4

An efficient multiversion algorithm for secure servicing of transaction reads

Paul Ammann, Sushil Jajodia
1994 Proceedings of the 2nd ACM Conference on Computer and communications security - CCS '94  
The algorithm also offers long-read transactions at any security level conflict-free access to a consistent, though slightly dated, view of any authorized portion of the database.  ...  We propose an efficient multiversion algorithm for servicing read requests in secure multilevel databases.  ...  On-the-fly, incremental, consistent reading of entire databases. Algorithmica, 1(3):271-287, October 1986. Con- trol and Recovery in Database Systems.  ... 
doi:10.1145/191177.191201 dblp:conf/ccs/AmmannJ94 fatcat:4xxjou6ngvdy5cmiou4edmu224

Quantification of the effects of chimerism on read mapping, differential expression and annotation following short-read de novo assembly

Raquel Linheiro, John Archer
2022 F1000Research  
Methods: Effects on mapping were quantified by simulating reads off the Drosophila melanogaster cDNA library and mapping these to related reference sets containing increasing levels of chimerism.  ...  Despite long-read sequencing negating this issue, short-reads remain in use through on-going research and archived datasets created during the last two decades.  ...  (C) Following quality filtering of two adult fruit fly whole-body samples from Pang et al. (2021), 40 consisting of 31,543,384 and 29,812,987 read pairs, reads were assembled using each of the three assemblers  ... 
doi:10.12688/f1000research.108489.1 fatcat:jx7j4fdh7jgpfbvgxgk4o2guuu

SIMAP—a comprehensive database of pre-calculated protein sequence similarities, domains, annotations and clusters

Thomas Rattei, Patrick Tischler, Stefan Götz, Marc-André Jehl, Jonathan Hoser, Roland Arnold, Ana Conesa, Hans-Werner Mewes
2009 Nucleic Acids Research  
Novel features of SIMAP include the expansion of the sequence space by including databases such as ENSEMBL as well as the integration of metagenomes based on their consistent processing and annotation.  ...  The SIMAP database provides a comprehensive and up-to-date precalculation of the protein sequence similarity matrix, sequence-based features and sequence clusters.  ...  ACKNOWLEDGEMENTS The authors gratefully acknowledge the BOINCSIMAP community for donating their CPU power for the calculation of protein similarities and features.  ... 
doi:10.1093/nar/gkp949 pmid:19906725 pmcid:PMC2808863 fatcat:oqjoo4khiffgnoceprxpxjaxk4

On brewing fresh espresso

Lin Qiao, Aditya Auradar, Chris Beaver, Gregory Brandt, Mihir Gandhi, Kishore Gopalakrishna, Wai Ip, Swaroop Jgadish, Shi Lu, Alexander Pachev, Aditya Ramesh, Kapil Surlaker (+15 others)
2013 Proceedings of the 2013 international conference on Management of data - SIGMOD '13  
It provides a hierarchical document model, transactional support for modifications to related documents, realtime secondary indexing, on-the-fly schema evolution and provides a timeline consistent change  ...  and presents a set of experimental results that characterize the performance of the system along various dimensions.  ...  Acknowledgement Many other members of the Linkedin Data Infrastructure team helped significantly in the development and deployment of Espresso.  ... 
doi:10.1145/2463676.2465298 dblp:conf/sigmod/QiaoSDQSGCSZABBGGIJLPRSSSSTTWZ13 fatcat:ljireze66zc7rllciq4nznq6pa

iBLAST: Incremental BLAST of new sequences via automated e-value correction

Sajal Dash, Sarthok Rasique Rahman, Heather M Hines, Wu-Chun Feng
2021 PLoS ONE  
Thus, to update the results of a previously conducted BLAST search to find the best matches on an updated database, scientists must currently rerun the BLAST search against the entire updated database,  ...  on the incremental (i.e., newly added) part of the database, recomputes the associated critical statistics such as e-values, and combines these results to produce updated search results.  ...  of the manuscript.  ... 
doi:10.1371/journal.pone.0249410 pmid:33886589 pmcid:PMC8062096 fatcat:twnpsftjvfaadoxqglax7enchq

Concurrency Control for Adaptive Indexing [article]

Goetz Graefe, Felix Halim, Stratos Idreos, Harumi Kuno, Stefan Manegold
2012 arXiv   pre-print
Adaptive indexing initializes and optimizes indexes incrementally, as a side effect of query processing.  ...  The goal is to achieve the benefits of indexes while hiding or minimizing the costs of index creation.  ...  For example, given a workload that consists entirely of a multitude of small transactions in the morning and then shifts in the afternoon to eventually consist entirely of key range operations, an incremental  ... 
arXiv:1203.6405v1 fatcat:36d44ujj6nfatmk6qdhgqa5qru

Concurrency control for adaptive indexing

Goetz Graefe, Felix Halim, Stratos Idreos, Harumi Kuno, Stefan Manegold
2012 Proceedings of the VLDB Endowment  
Adaptive indexing initializes and optimizes indexes incrementally, as a side effect of query processing.  ...  The goal is to achieve the benefits of indexes while hiding or minimizing the costs of index creation.  ...  For example, given a workload that consists entirely of a multitude of small transactions in the morning and then shifts in the afternoon to eventually consist entirely of key range operations, an incremental  ... 
doi:10.14778/2180912.2180918 fatcat:bnw2pruxubatthhlk3qnzxg4em

An Approach to RDF(S) Query, Manipulation and Inference on Databases [chapter]

Jing Lu, Yong Yu, Kewei Tu, Chenxi Lin, Lei Zhang
2005 Lecture Notes in Computer Science  
Specifically, RDF(S) inference is done on the database in advance instead of on the fly, so that the query efficiency is maximized.  ...  In this paper we propose an approach to the storage, query, manipulation and inference of large RDF(S) data on top of relational databases.  ...  fly.  ... 
doi:10.1007/11563952_16 fatcat:5uszr2jsybesvezct2hdy5qzsu

Living in the present

David Eyers, Tobias Freudenreich, Alessandro Margara, Sebastian Frischbier, Peter Pietzuch, Patrick Eugster
2012 Proceedings of the 2nd International Workshop on Cloud Computing Platforms - CloudCP '12  
Today's social web platforms, such as Facebook, Twitter, Google+, and LinkedIn, increasingly have to process large volumes of user-generated data on the fly.  ...  more servers when required by computationally expensive on-the-fly data analytics applications.  ...  one of the core components of the entire infrastructure.  ... 
doi:10.1145/2168697.2168703 fatcat:6tvn5njmybd7xfsderihf5mxai

NoDB

Ioannis Alagiannis, Renata Borovica, Miguel Branco, Stratos Idreos, Anastasia Ailamaki
2012 Proceedings of the 2012 international conference on Management of Data - SIGMOD '12  
We here present the design and roadmap of a new paradigm in database systems, called NoDB, which do not require data loading while still maintaining the whole feature set of a modern database system.  ...  More data means more time to prepare and to load the data into the database before executing the desired queries.  ...  On-the-fly Parsing We first discuss aspects related to on-the-fly raw file parsing and essential features such as selective parsing and tuple formation.  ... 
doi:10.1145/2213836.2213864 dblp:conf/sigmod/AlagiannisBBIA12 fatcat:iy4wl32hqjcepd4737zl6iujsu

NoDB

Ioannis Alagiannis, Renata Borovica-Gajic, Miguel Branco, Stratos Idreos, Anastasia Ailamaki
2015 Communications of the ACM  
We here present the design and roadmap of a new paradigm in database systems, called NoDB, which do not require data loading while still maintaining the whole feature set of a modern database system.  ...  More data means more time to prepare and to load the data into the database before executing the desired queries.  ...  On-the-fly Parsing We first discuss aspects related to on-the-fly raw file parsing and essential features such as selective parsing and tuple formation.  ... 
doi:10.1145/2830508 fatcat:grr3yx6sujajxg6wf32extsczy

SIMAP—the database of all-against-all protein sequence similarities and annotations with new interfaces and increased coverage

Roland Arnold, Florian Goldenberg, Hans-Werner Mewes, Thomas Rattei
2013 Nucleic Acids Research  
SIMAP covers all major public protein databases as well as many consistently re-annotated metagenomes from different repositories.  ...  SIMAP uses the sensitive FASTA search heuristics, the Smith-Waterman alignment algorithm, the InterPro database of protein domain models and the BLAST2GO functional annotation algorithm.  ...  SIMAP can only be maintained with the help of BOINC and is based on server hardware provided by the University of Vienna.  ... 
doi:10.1093/nar/gkt970 pmid:24165881 pmcid:PMC3965014 fatcat:nxbvchfugjd6pa7u7whwbn7idq
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