ncy XPath-based locking protocol for XML databasesعنوان فارسی : پروتکل قفل گذاری بر مبنای XPath، با همزمانی بالا برای پایگاه داده های XMLسال چاپ : 2005دانلود رایگان مقاله انگلیسی :http://uupload.ir/view/y4a_a_high_concurrency.pdf/AbstractProviding efficient access to XML documents becomes crucial in XML database systems. More and more concurrency control protocols for XML database systems were proposed in the past few years. Being an important language for addressing data in XML documents, XPath expressions are the basis of several query languages, such as XQurey and XSLT. In this paper, we propose a lock-based concurrency control protocol, called XLP, for transactions accessing XML data by the XPath model. XLP is based on the XPath model and has the features of rich lock modes, low lock conflict and lock conversion. XLP is also proved to ensure conflict serializability. In sum, there are three