Distributed and Parallel Databases - Special issue: Research topics in distributed and parallel databases
Real-time databases: issues and applications
Advances in real-time systems
Predictability and consistency in real-time database systems
Advances in real-time systems
Applying update streams in a soft real-time database system
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
Temporal and Real-Time Databases: A Survey
IEEE Transactions on Knowledge and Data Engineering
Maintaining Temporal Consistency: Pessimistic vs. Optimistic Concurrency Control
IEEE Transactions on Knowledge and Data Engineering
Database Support for Efficiently Maintaining Derived Data
EDBT '96 Proceedings of the 5th International Conference on Extending Database Technology: Advances in Database Technology
Scheduling Real-time Transactions: a Performance Evaluation
VLDB '88 Proceedings of the 14th International Conference on Very Large Data Bases
A Multidatabase System for Tracking and Retrieval of Financial Data
VLDB '94 Proceedings of the 20th International Conference on Very Large Data Bases
Scheduling transactions with temporal constraints: exploiting data semantics
RTSS '96 Proceedings of the 17th IEEE Real-Time Systems Symposium
A multi-version data model for executing real-time transactions in a mobile environment
Proceedings of the 2nd ACM international workshop on Data engineering for wireless and mobile access
Evaluation of concurrency control strategies for mixed soft real-time database systems
Information Systems - Databases: Creation, management and utilization
Maintaining Temporal Consistency of Discrete Objects in Soft Real-Time Database Systems
IEEE Transactions on Computers
QoS management for real-time DataBases in embedded systems
Proceedings of the 2008 Euro American Conference on Telematics and Information Systems
UpStream: storage-centric load management for streaming applications with update semantics
The VLDB Journal — The International Journal on Very Large Data Bases
A multi-version data model and semantic-based transaction processing protocol
ADBIS'05 Proceedings of the 9th East European conference on Advances in Databases and Information Systems
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A database system contains base data items which record and model a physical, real world environment. For better decision support, base data items are summarized and correlated to derive views. These base data and views are accessed by application transactions to generate the ultimate actions taken by the system. As the environment changes, updates are applied to the base data, which subsequently trigger view recomputations. There are thus three types of activities: base data update, view recomputation, and transaction execution. In a real-time system, two timing constrains need to be enforced. We require transactions meet their deadlines (transaction timeliness) and read fresh data (data timeliness). In this paper we define the concept of absolute and relative temporal consistency from the perspective of transactions. We address the important issue of transaction scheduling among the three types of activities such that the two timing requirements can be met. We also discuss how a real-time database system should be designed to enforce different levels of temporal consistency.