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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
2017
ISPRS International Journal of Geo-Information
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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
2019
Proceedings of the Workshop on Hot Topics in Operating Systems - HotOS '19
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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
2013
2013 IEEE International Conference on Big Data
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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
1994
Proceedings of the 2nd ACM Conference on Computer and communications security - CCS '94
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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
2022
F1000Research
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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
2009
Nucleic Acids Research
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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
2013
Proceedings of the 2013 international conference on Management of data - SIGMOD '13
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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
2021
PLoS ONE
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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]
2012
arXiv
pre-print
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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
2012
Proceedings of the VLDB Endowment
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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]
2005
Lecture Notes in Computer Science
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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
2012
Proceedings of the 2nd International Workshop on Cloud Computing Platforms - CloudCP '12
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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
2012
Proceedings of the 2012 international conference on Management of Data - SIGMOD '12
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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
2015
Communications of the ACM
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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
2013
Nucleic Acids Research
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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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