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Lecture Notes in Computer Science
Due to limited bandwidth and unpredictable behavior of mobile networks, the past research on concurrency control for distributed real-time database systems (DRTDBS) can not be directly applied to MDRTDBS ... With possibly lengthy transmission delay and frequent disconnection, traditional concurrency control mechanisms may become very costly and time-consuming in mobile distributed real-time database systems ... This paper proposes a real-time locking protocol, called SDHP-2PL, based on the High Priority Two Phase Locking (HP-2PL) scheme  and the concept of similarity for MDRTDBS. ...doi:10.1007/bfb0097915 fatcat:frf6lqpkpjawhkcv4zhhvgmh5a
Lecture Notes in Computer Science
Because optimistic concurrency control is promising candidate for real-time database systems, distributed optimistic concurrency control methods are discussed more detailed way. ... real-time database system for telecommunications. . . . ... Our study has shown that there is no distributed optimistic concurrency control method, which is clearly suitable for real-time database system whitout modification. ...doi:10.1007/978-3-540-30561-3_26 fatcat:bttdfr5rybfo5b63xtlryumnsq
Lecture Notes in Computer Science
It maintains real-time constraints of transactions, database integrity, and concurrency control. ... They support concurrently running real-time transactions using optimistic concurrency control protocol with deferred write policy. ...doi:10.1007/10721056_12 fatcat:bkdywaxru5harjum2lf5kpwscu
This study discusses distributed transactions, ACID properties, and states of transactions, distributed concurrency control and various concurrency control techniques for a distributed database. ... Concurrency control is one of the essential tasks of any database management system. ... The study addresses the management of transactions in a distributed real-time database. ...doi:10.47760/ijcsmc.2021.v10i01.006 fatcat:a4gp2bcqmvbyhcfuimcaugjje4
[Kim91] proposes new multiversion concurrency control protocols to increase concurrency in RTDBS's. In [Sop92] an adaptive commit protocol is introduced for distributed RTDB transactions. ... Due to ever increasing volume of information being handled by data-intensive real-time applications, a need has arisen for applying database technology to real-time systems. ...doi:10.1145/141818.141821 fatcat:3sbwostrqbh2rhftyjulkjywkq
A real-time software simulator library scope is presented. ... It consist of hardware, software, transaction, and event generator components that can be concatenated to form a core real-time database simulator. ... However, their approach is for hard real-time systems while our library is for real-time databases. ...doi:10.1016/s1474-6670(17)39968-8 fatcat:7nsg3bqrmzaydf5xurrwgfueiy
IEEE Transactions on Computers
Chin-Fu Kuo Abstract While there has been a significant amount of research in real-time concurrency control, little work has been done in logging and recovery for real-time databases. ... explores logging and recovery for real-time databases , . ...
Efficient database management algorithms for accessing and manipulating data are required to satisfy timing constraints of supported applications. ... Real-time database systems involve a new research area investigating possible ways of applying database systems technology to real-time systems. ... DISTRIBUTED CONCURRENCY CONTROL In a distributed database system, a scheduler at each site is responsible for controlling concurrent accesses to data items stored at that site. ...doi:10.1016/0020-0255(95)00130-1 fatcat:xpbewsfa3vb3jlbzxinnqehldy
Most of the proposed concurrency control protocols for real-time database systems (RTDBS) are based on serializability theorem. ... Owing to the unique characteristics of real-time database applications and the importance of satisfying the timing constraint of the transactions, serializable concurrency control protocols are not suitable ... In this paper, we have defined a real-time concurrency control protocol based on similarity for a real-time database application, a stock trading database system. ...doi:10.1016/s0164-1212(98)10035-3 fatcat:wwaht7amynfrzblgvajgrqd5x4
Concurrency situation is not desirable for time dependent and time critical large database applications; it must be efficiently controlled and managed to ensure consistency of database system. ... Concurrency control mechanism elevates to a new height when it is implemented on temporal database especially for multiuser distributed transaction environment and it requires a special treatment. ... Generally time dependent and time critical real time applications of database technology are temporal in nature. ...doi:10.5121/ijdms.2016.8503 fatcat:3yqsu5vnajdn7clij5eim5u6ea
This article introduces the key technologies and implementation approaches when Redis memory database is taken as SCADA real time data cache. ... The existing SCADA software based on C/S can no longer meet the current monitoring requirement of electric power enterprises for unattended substations. ... of Redis real-time database. ...doi:10.12783/dtcse/cmee2016/5316 fatcat:tqn22kyoo5c6zkccoizvl5xhtm
Intelligent Networks and Intelligence in Networks
We also introduce an experimental database architecture which is a real-time distributed object-oriented database architecture. ... We examine the design issues of real-time transaction processing in database architectures that can be integrated into any teleoperator's service provision architecture. ... Designing an Real-Time Database System One of the primary difficulties in designing an RT-DBS is the fact that the concurrency control of data access must be combined with timing constraints. ...doi:10.1007/978-0-387-35066-0_11 fatcat:6vho4y22bjf7nbp2m5bjnt2seu
Kao and Sheung-lun Hung, "Priority Assignment in Distributed Real-time Databases Using Optimistic Concurrency Control," IEE Proceedings Computers and Digital Techniques, pp. 324-330, vol. 144, no. 5, 1997 ... Hung, "Concurrency Control for Mixed Transactions in Real- Time Databases," IEEE Transactions on Computers, vol. 51, no. 7, pp. 821-834, 2002. 32/229 (13%) Engineering, Electrical & Electronic ...doi:10.1109/twc.2011.092011.101652 fatcat:jyi5nmkxqfcutfjbctqa6dl4du
Database Systems for Advanced Applications '93
Also we address the issues associated with transaction scheduling and concurrency control and present a scheduling algorithm for distributed real-time database systems. ... Compared with traditional databases, real-time database systems have a distinct feature: they must satisfy timing constraints associated with transactions. ... In this paper we address the issues associated with transaction scheduling and concurrency control, and present a scheduling algorithm for distributed real-time database systems. ...doi:10.1142/9789814503730_0025 fatcat:rkpvtpxrfrfubclaksscot2pxu
What real-time databases and optimistic concurrency control are, and which performance measures are important, is explained in detail. ... The first purpose is to introduce the reader to the application behind the queueing model: real-time databases. In Section 1.1 we intro- duce databases, transactions, and concurrency control. ...
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