The topic of data warehousing encompasses architec-tures, algorithms, and tools for bringing together selected data from multiple databases or other information sources into a single repository, called a data warehouse , suitable for direct querying or analysis. In recent years data warehousing has become a prominent buz-zword in the database industry, but attention from the database research c...

One of the popular network security programs supporting host access control is the ’TCP Wrapper’ [13]. TCP Wrapper is a software–only system and many computers connected to the Internet are using it. But, TCP Wrapper does ’IP address–based’ access control. IP address is not such a reliable source when authenticating a host. In this paper, we point out two possible attacks against the TCP Wrappe...

In this paper, we propose an adaptive wrapper generator that can generate adaptable wrapper for adapting networked information sources (NIS) format changes. When NIS’s format changed, the adaptable wrapper can start recovery phase to discover the extraction rule of the new format of target NIS. The wrapper can automatically adapt the changes of content tag and accurately extract information. Th...

With this PCell wrapper, MGEN layout generators appear like usual SKILL based PCells within DF II. A wrapper PCell must be created for each layout generator. The wrapper PCells just differ in the parameters declarations and the corresponding construction of the layout generator command line. The MGEN environment creates the wrapper PCells automatically. mgenlayoutcds mostran model=nreg w=1u l=1...

There exist two types of wrappers: the string based wrapper such as the LR wrapper, and the tree based wrapper. A tree based wrapper designates extraction regions by nodes on the trees of semistructured documents. The tree based wrapper seems to be more powerful than the string based one. There exist, however, many HTML documents on the Web such that a standard tree based wrapper fails to extra...

In this paper, we focus on the problem in information integration system of obtaining data from heterogeneous data source accurately and effectively. XML is used as data exchange format of the wrapper. We design the wrapper architecture based on the conversion and management of the views as the bridge from global schema to local schema of various data sources. Our wrapper has two main subsystem...

Web scraping (or wrapping) is a popular means for acquiring data from the web. Recent advancements have made scalable wrapper-generation possible and enabled data acquisition processes involving thousands of sources. This makes wrapper analysis and maintenance both needed and challenging as no scalable tools exists that support these tasks. We demonstrate WADaR, a scalable and highly automated ...

We present a service-oriented architecture and a set of techniques for developing wrapper code generators, including the methodology of designing an effective wrapper program construction facility and a concrete implementation, called XWRAPComposer. Our wrapper generation framework has two unique design goals. First, we explicitly separate tasks of building wrappers that are specific to a Web s...