Efficient Schemes to Evaluate Transaction Performance in Distributed Database Systems

Improving Performance in Distributed Database Systems Using Speculative Transaction Processing

In distributed database systems (DDBSs), a transaction acquires the locks on the data objects during the execution and releases them only after the completion of commit processing. In DDBSs, it can be observed that, even though a transaction produces new data object values on completion of execution and these new data object values are not a ected during commit processing, the locks are release...

coordination of protective schemes in distribution and subtransmission systems including distributed generation

نصب منابع پراکنده در سیستم های توزیع و فوق توزیع علاوه بر مزیت های فراوان، مشکلاتی را هم به همراه دارد. یکی از این مشکلات تأثیر این منابع روی اندازه جریان های اتصال کوتاه است. به طور معمول از حفاظت های مبتنی بر اصل جریان زیاد در سیستم های توزیع و فوق توزیع استفاده می شود. از مهمترین طرح های حفاظتی استفاده شده در فیدرهای توزیع، حفاظت فیوز- ریکلوزر است. همچنین از طرح های حفاظتی جریان زیاد جهتی در...

Transaction Accessibility and Integrity Issues in Heterogeneous Distributed Database Systems

Mobile Agent Model for Transaction Processing in Distributed Database Systems

In database applications, application programs are performed on clients and issue requests to object servers. Then, the object servers send responses to the clients. On the other hand, programs named agents move to object servers where the agents manipulate objects in a mobile agent approach. If agents complete manipulating objects in the servers, the agents move to other servers. If an agent c...

Data Allocation and Transaction Processing in Distributed Database Systems

Distributed database processing requires the transmission of data between computers in a distributed system. Data transmission is becoming an increasingly attractive data-dissemination method for large database systems. In order to effectively utilize distributed query processing, it is necessary to have efficient dynamic allocation algorithms that can balance individual and overall performance...