Conclusion

In this final chapter of the section, the conclusion of this book section is given. It is summarized how the initial hypothesis has been investigated and which answer has been found. A brief summary of the achievements as well as the intended future work in this area are presented.

Research Background

In this chapter, the research background is discussed. This includes XML model, XML query languages, XML schema languages, XML Application Program Interface, XML documents types, XML data storage approaches, relational database model, and the similarities and differences between XML model and relational database model. Finally the chapter summary is given.

XCVQ Testing, Evaluation and Discussion

Since the testing and evaluation processes are part of SDM, this chapter illustrates the detailed testing of XCVQ and its ensuing evaluation. Because the XCVQ model consists of three main parts, XCVQ-C, XCVQ-D, and XCVQ-QP, the testing strategy will involve testing each stage on its own. This chapter describes the testing of the three parts of the XCVQ model.

Foundation of XML Stream Processing Techniques

The problem of processing streaming XML data is gaining widespread attention from the research community, and various XML stream processing methods are put forward, including automaton-based methods, index-based methods, and so forth. In this chapter, the basic concepts and several existing typical approaches of XML stream processing are discussed. Section 1 introduces the background and current research status of this area. Section 2 focuses on the discussion of automaton-based methods, for example, X/YFilter, XPush, et cetera. In section 3, the index-based methods are given. In section 4, other methods such us Fist and XTrie are discussed briefly. Section 4 discusses some optimization technique of XML stream processing. Section 5 summarizes this chapter.

An Efficient and Flexible Approach of Keyword Search in XML

In this chapter, firstly, the LCA-based approaches for XML keyword search are analyzed and compared with each other. Several fundamental flaws of LCA-based models are explored, of which, the most important one is that the search results are eternally determined nonadjustable. Then, the chapter presents a system of adaptive keyword search in XML, called AdaptiveXKS, which employs a novel and flexible result model for avoiding these defects. Within the new model, a scoring function is presented to judge the quality of each result, and the considered metrics of evaluating results are weighted and can be updated as needed. Through the interface, the system administrator or the users can adjust some parameters according to their search intentions. One of three searching algorithms could also be chosen freely in order to catch specific querying requirements. Section 1 describes the Introduction and motivation. Section 2 defines the result model. In section 3 the scoring function is discussed deeply. Section 4 presents the system implementation and gives the detailed keyword search algorithms. Section 5 presents the experiments. Section 6 is the related work. Section 7 is the conclusion of this chapter.

A Rule-Based Approach to Model Business Process

Up to the present, the modeling of business process manly focuses on the flow-control perspective, regardless of the logic relationships between models. Although the value of business rules in business process modeling has been recognized by many organizations, it is not fully clear how business rules can be used to model business process models. Business rules are powerful representation forms that can potentially define the semantics of business process models and business vocabulary. This chapter is committed to model the business process based on SBVR, then use the method mentioned below to transform a plain text rule statement into BPMN files.

An Overview of Business Process Management

BPM (Business Process Management) includes support for business process analysis, design, implementation, management methods, techniques, and tools. This chapter introduces the origin of BPM technology and development, covering four fields: Business Process Management benefits, the history of BPM, classification of Business process, the lifecycle of BPM, and Business Process Modeling Techniques. In addition, the authors also determine that the present workflow technology is not enough to exist in the root causes of some deficiencies; concluding the chapter with the future of workflow technology trends.

Conclusions and Further Research

In this chapter, the authors characterize a new model for mapping XML documents into relational database. The model examines the problem of solving the structural hole between ordered hierarchical XML and unordered tabular relational database to enable use of the relational database systems for storing, updating, and querying XML data. The authors introduce and implement a mapping system called MAXDOR to solve the problem.

Experiments and their Assessment

In this chapter, the authors give a description of the experiment setup consisting of experiment environment and performance measurement. They perform experiments on mapping XML document into relational database, building XML document from relational database, updating XML document stored in relational database, and retrieving document content from relational database using XPath expressions. These experiments will be done to check the scalability and effectiveness of the model. Then they compare their model with the (Tatarinov et al., 2002) and the Accelerating XPath model (Torsten et al., 2004). The comparison consist of four stages: mapping, building, updating, and retrieving, as most of other studies just took one or two stage and forgot the others. Some of them took retrieving, others took updating, and others took updating and retrieving, but most of them did not consider mapping and rebuilding.

State of the Art Technology

This chapter presents the state of the art approaches for storing and retrieving the XML documents from relational databases. Approaches are classified into schema-based mapping and schemaless-based mapping. It also discusses the solutions which are included in Database Management Systems such as SQL Server, Oracle, and DB2. The discussion addresses the issues of: rebuilding XML from RDBMS approaches, comparison of mapping approaches, and their advantages and disadvantages. The chapter concludes with the issues addressed.