Locking Based Concurrency Control for Integrated Real-Time Database Systems.
D. Hong, Sharma Chakravarthy, Theodore J. Johnson · 1996
In many database applications, incoming transactions are a mixed load of conventional (non real-time) and real-time (typically soft and firm) transactions. In this environment, transactions can even be changed dynamically from non realtime to soft or firm, or from soft to firm deadline transactions according to their execution paths. In this paper we show how lock based approach can handle these situation better than Optimistic Concurrency Control and how we can extend Alternative Version Concurrency Control (AVCC [Hon95]) to handle the mixed load efficiently for integrated real-time databases systems. 1 Introduction In many applications such as Network Service Databases [PSS + 94], incoming transactions are usually a mixed load of non real-time, soft, and firm types. Transactions that query the Network Traffic Management (NTM) data that are maintained to support selfadaptive capability and fault-tolerance of Network Ser- This work is supported by the Office of Naval Research an...