Sökning: "Real-time databases"

Visar resultat 1 - 5 av 22 avhandlingar innehållade orden Real-time databases.

  1. 1. Management of Real-Time Data Consistency and Transient Overloads in Embedded Systems

    Författare :Thomas Gustafsson; Jörgen Hansson; Ming Xiong; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Real-time systems; Real-time databases; Embedded systems; Similarity; Transient overloads; Computer science; Datalogi;

    Sammanfattning : This thesis addresses the issues of data management in embedded systems' software. The complexity of developing and maintaining software has increased over the years due to increased availability of resources, e.g., more powerful CPUs and larger memories, as more functionality can be accommodated using these resources. LÄS MER

  3. 2. Optimistic Replication with Forward Conflict Resolution in Distributed Real-Time Databases

    Författare :Sanny Syberfeldt; Sten Andler; Jörgen Hansson; Sang H. Son; Alejandro Buchmann; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Distributed Systems; Real-Time Systems; Databases; Replication; Optimistic Protocol; Conflict Resolution; Computer science; Datalogi; Teknik;

    Sammanfattning : In this thesis a replication protocol - PRiDe - is presented, which supports optimistic replication in distributed real-time databases with deterministic detection and forward resolution of transaction conflicts. The protocol is designed to emphasize node autonomy, allowing individual applications to proceed without being affected by distributed operation. LÄS MER

  4. 3. Virtual Full Replication for Scalable Distributed Real-Time Databases

    Författare :Gunnar Mathiason; Sten F. Andler; Sang H. Son; Hans Hansson; Alejandro Buchmann; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Scalability; Flexibility; Adaptiveness; Database Replication; Resource Management; Distributed Database; Real-time Database; Computer science; Datalogi; Information technology; Informationsteknik; Teknik;

    Sammanfattning : A fully replicated distributed real-time database provides high availability and predictable access times, independent of user location, since all the data is available at each node. However, full replication requires that all updates are replicated to every node, resulting in exponential growth of bandwidth and processing demands with the number of nodes and objects added. LÄS MER

  5. 4. Performance Aspects of Databases and Virtualized Real-time Applications

    Författare :Christine Niyizamwiyitira; Lars Lundberg; Mikael Svahnberg; Richard Chbeir; Blekinge Tekniska Högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SQL and NoSQL database; Bigdata management systems; Structured and non-structured Database Evaluation; Voice-driven web; Multicore performance prediction; Hard real-time Scheduling; Virtual Multiprocessor Scheduling;

    Sammanfattning : Context: High computing system performance depends on the interaction between software and hardware layers in modern computer systems. Two strong trends that effect different layers in computer systems are that single processors are now more or less completely replaced by multiprocessors, which are often organized into clusters, and virtualization of resources. LÄS MER

  7. 5. Maintaining data consistency in embedded databases for vehicular systems

    Författare :Thomas Gustafsson; Jörgen Hansson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Engine control software; real-time; embedded applications; metainformation; algorithms; Performance evaluations; HP2PL; OCC; Computer science; Datavetenskap;

    Sammanfattning : The amount of data handled by real-time and embedded applications is increasing. This calls for data-centric approaches when designing embedded systems, where data and its metainformation (e.g., temporal correctness requirements) are stored centrally. LÄS MER