International Conference on Information Technology and Computer Science, 3rd (ITCS 2011)
48 Research on Data Consistencies Based on Mobile Real-Time Database
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- Ris (Zotero)
- Reference Manager
Since the mobility of user terminal and special constraints of mobile terminal resource, we have to improve its efficiency at the expense of some accuracy of the data in the mobile real-time database when we deal with the mobile real-time transactions. It brings data inconsistencies in database, such as dirty read, written-lost and non-repeatable read. We use the isolation level to ensure the consistency of the database traditionally. Different transaction isolation levels' mechanisms can deal with different data inconsistencies, however, they are contradictory between transaction isolation level and transaction concurrent degree. In this paper, three data inconsistencies are carried out in formal definition. We put forward to a detailed analysis and solutions according to three data inconsistencies specific application, and also propose a transactional lock method under a new isolation control.