A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
Filters
Robustness against Read Committed for Transaction Templates
[article]
2021
arXiv
pre-print
Preserved Fulltext
Robustness testing and safely executing transactions under the lower isolation level RC can therefore provide a direct way to increase transaction throughput without changing DBMS internals. ...
The isolation level Multiversion Read Committed (RC), offered by many database systems, is known to trade consistency for increased transaction throughput. ...
the lower isolation level RC. ...
arXiv:2107.12239v1
fatcat:b4knmi52fvgiladm6vhcfneyfe
Robustness of Quantum-Enhanced Adaptive Phase Estimation
[article]
2018
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Other Versions
As all physical adaptive quantum-enhanced metrology schemes operate under noisy conditions with only partially understood noise characteristics, so a practical control policy must be robust even for unknown ...
We aim to devise a test to evaluate the robustness of AQEM policies and assess the resource used by the policies. ...
This limit also appears at V = 7 for log-normal noise, whereas the same noise-level only lead to ℘ B approaching SQL when skew-normal noise is present. ...
arXiv:1809.05525v2
fatcat:2o6dyvlnvbb4bh7lbeu7ykpgaa
Not for the timid
2016
Proceedings of the VLDB Endowment
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Increased sensitivity to idleness leads to aggressive over-booking while the converse leads to conservative reclamation and lower utilization levels. ...
To help us answer these questions, we used production user activity traces from Azure SQL DB and built models of an over-booking mechanism. ...
ACKNOWLEDGEMENTS The authors would like to thank Rohan Kumar and Mike Zwilling for their support and Jignesh Patel, Alan Halverson, Eric Robinson, Rimma Nehme, Raghu Ramakrishnan for their comments. ...
doi:10.14778/3007263.3007264
fatcat:6p4rmubc55aatejf7oxjcvl7xm
Database Versioning 2.0, a Transparent SQL Approach Used in Quantitative Management and Decision Making
2015
Procedia Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
versioning system which keeps the natural dependency between data on each internal revision, a basis of security and alteration control mechanism, trend analytics, without sacrificing(within acceptable levels ...
Also we should keep in mind that the cost per-byte and processing power, in later years, is becoming lower, for small to middle systems (e.g. small on-line shop, small to middle organization, financing ...
The first involves employing a validation scheme (formal) and the manual engine lets the decision at application level to decide if the information stored is considered a checkpoint (e.g. valuable and ...
doi:10.1016/j.procs.2015.07.030
fatcat:tecklzpzy5hk3d5uyf4rce5biq
Automated Demand-driven Resource Scaling in Relational Database-as-a-Service
2016
Proceedings of the 2016 International Conference on Management of Data - SIGMOD '16
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
However, automating this task is daunting for most tenants since estimating resource demands for arbitrary SQL workloads in an RDBMS is complex and challenging. ...
Our solution derives a set of robust signals from database engine telemetry and combines them to significantly improve accuracy of demand estimation for database workloads resulting in more accurate scaling ...
Several members of the Microsoft Azure SQL Database group, including Peter Carlin, Miroslav Grbic, Veljko Vasic, and Petar Lotrean, have provided feedback that influenced our work. ...
doi:10.1145/2882903.2903733
dblp:conf/sigmod/DasLNK16
fatcat:khsgvr3wxrfvhhbq2qjthvesta
The Cost of Serializability on Platforms That Use Snapshot Isolation
2008
2008 IEEE 24th International Conference on Data Engineering
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
SI prevents many anomalies that appear in other isolation levels, but it still can result in non-serializable execution, in which database integrity constraints can be violated. ...
However, ELM has peak performance which is similar to SI, no matter which transactions are chosen for modification. Thus we say that ELM is a robust technique for ensure serializable execution. ...
Indeed in most SQL-based platforms, the Read Committed (abbreviated as RC) isolation level is the default, used when the application developer has not explicitly set an isolation level. ...
doi:10.1109/icde.2008.4497466
dblp:conf/icde/AlomariCFR08
fatcat:pxflhyepvrgixh3ssadngfm3ji
Introducing Custom Language Extensions to SQL:1999
[chapter]
2003
Lecture Notes in Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Even though SQL has become widely accepted as a language for implementing relational database schemas and querying data, there are cases where its users experience the need for new language abstractions ...
This paper describes the idea of language extensions to SQL:1999 that come in form of independent packages and may be implemented by different vendors. ...
language construct to lower level constructs that are either directly supported by SQL:1999 or need to pass additional reduction steps. ...
doi:10.1007/3-540-45017-3_15
fatcat:4l6sfarybfcfnngdsxqpmu2yei
SeSQLite: Security Enhanced SQLite
2015
Proceedings of the 31st Annual Computer Security Applications Conference on - ACSAC 2015
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
SeSQLite implements labeling and access control at both schema level (for tables and columns) and row level. This permits the management of a fine-grained access policy for database objects. ...
SQLite is the most widely deployed in-process library that implements a SQL database engine. It offers high storage efficiency, fast query operation and small memory needs. ...
Schema Level All SQL statements must be compiled before their execution. ...
doi:10.1145/2818000.2818041
dblp:conf/acsac/MuttiBP15
fatcat:qs7inhnj7jggjax7nha4cmo6vu
Can the Elephants Handle the NoSQL Onslaught?
[article]
2012
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
We present insights from this evaluation and speculate on potential trends for the future. ...
SQL) on two workloads (decision support analysis and interactive data-serving) that represent the two ends of the application spectrum. ...
The read latency is significantly lower now, compared to that of the previous experiment where the "read committed" isolation level was used. ...
arXiv:1208.4166v1
fatcat:woqbgeo6dvdyjmd7htcr3ybgeq
Can the elephants handle the NoSQL onslaught?
2012
Proceedings of the VLDB Endowment
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2015; you can also visit the original URL.
The file type is application/pdf.
We present insights from this evaluation and speculate on potential trends for the future. ...
SQL) on two workloads (decision support analysis and interactive data-serving) that represent the two ends of the application spectrum. ...
The read latency is significantly lower now, compared to that of the previous experiment where the "read committed" isolation level was used. ...
doi:10.14778/2367502.2367511
fatcat:qqcpsgtswncqphnfrxfgiatqka
PNUTS to Sherpa
2019
Proceedings of the VLDB Endowment
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
As bigger applications started using Sherpa, we decided to build isolation mechanisms into the multi-tenant hosted architecture. ...
Instead, mastership is assigned at the tablet level. ...
doi:10.14778/3352063.3352146
fatcat:u6ysd7sza5fojo2trusnt2sfdy
DBaaS Multitenancy, Auto-tuning and SLA Maintenance in Cloud Environments: a Brief Survey
2018
iSys
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
agreed between client and provider, that are defined in the Service Level Agreement (SLA). ...
In this paper it is presented a classification based on three main parameters that aim to manage resources for enhancing the performance on DBaaS and guarantee that the SLA is respected for both user and ...
There are several types of multitenancy providing different levels of isolation [24, 4] , and for each isolation level a different abstraction will be given to the tenant. ...
doi:10.5753/isys.2018.362
fatcat:gjwho257wra6pcdwnpx6wcsyja
Coordination through querying in the youtopia system
2011
Proceedings of the 2011 international conference on Management of data - SIGMOD '11
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
On one hand, entangled queries are simpler to use than lower-level coordination constructs offered by operating systems; on the other, they support many interesting use cases. ...
A query whose postcondition is not satisfied is not rejected but waits for an opportunity to retry. We believe that Youtopia captures coordination at the ideal level of abstraction [3] . ...
doi:10.1145/1989323.1989490
dblp:conf/sigmod/GuptaKBRGK11
fatcat:lsfvnglysfbkpdg3djhygzyqt4
DoubleGuard: Detecting Intrusions in Multitier Web Applications
2012
IEEE Transactions on Dependable and Secure Computing
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Finally, using DoubleGuard, we were able to expose a wide range of attacks with 100% accuracy while maintaining 0% false positives for static web services and 0.6% false positives for dynamic web services ...
For a regular user, the web request r u will trigger the set of SQL queries Q u ; for an administrator, the request r a will trigger the set of admin level queries Q a . ...
With a more accurate model, we can reach 100% sensitivity with a lower False Positive rate. ...
doi:10.1109/tdsc.2011.59
fatcat:u3vwuq5yavggpgm542glsfwpvq
Automatically Indexing Millions of Databases in Microsoft Azure SQL Database
2019
Proceedings of the 2019 International Conference on Management of Data - SIGMOD '19
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Our service has been generally available for more than two years, generating index recommendations for every database in Azure SQL Database, automatically implementing them for a large fraction, and significantly ...
We describe the challenges, architecture, design choices, implementation, and learnings from building an industrial-strength auto-indexing service for Microsoft Azure SQL Database, a relational database ...
ACKNOWLEDGMENTS We thank the entire auto tuning engineering team in Azure SQL Database for their contributions to the auto-indexing service. ...
doi:10.1145/3299869.3314035
dblp:conf/sigmod/DasGIJJNRSXC19
fatcat:ecpfvrs7r5b5xedc7ktbvgdhyy
« Previous
Showing results 1 — 15 out of 3,270 results