java外文翻譯-管理系統(tǒng)(編輯修改稿)
2025-06-26 18:36 本頁面
【文章內(nèi)容簡介】 up (OMG). The MOF provides a model and a set of interfaces for the creation, storage, access, Metamodel and metadata interchange is done via XML and uses the XML Metadata Interchange (XMI) specification, also from the OMG. JMI leverages Java technology to create an endtoend data warehousing and business intelligence solutions framework. Enterprise JavaBeans A key tool provided by J2EE is Enterprise JavaBeans (EJB), an architecture for the development of ponentbased distributed business applications. Applications written using the EJB architecture are scalable, transactional, secure, and multiuser aware. These applications may be written once and then deployed on any server platform that supports J2EE. The EJB architecture makes it easy for developers to write ponents, since they do not need to understand or deal with plex, systemlevel details such as thread management, resource pooling, and transaction and security management. This allows for rolebased development where ponent assemblers, platform providers and application assemblers can focus on their area of responsibility further simplifying application development. Data Storage amp。 Access Data stored in existing applications can be accessed with specialized connectors. Integration and interoperability of these data sources is further enabled by the metadata repository that contains metamodels of the data contained in the sources, which then can be accessed and interchanged uniformly via the JMI API. These metamodels capture the essential structure and semantics of business ponents, allowing them to be accessed and queried via the JMI API or to be interchanged via XML. Through all of these processes, the J2EE infrastructure ensures the security and integrity of the data through transaction management and propagation and the underlying security architecture. To consolidate historical information for analysis of sales and marketing trends, a data warehouse is often the best solution. In this example, data can be extracted from the operational systems with a variety of Extract, Transform and Load tools (ETL). The metamodels allow EJBs designed for filtering, transformation, and consolidation of data to operate uniformly on data from diverse data sources as the bean is able to query the metamodel to identify and extract the pertinent fields. Queries and reports can be run against the data warehouse that contains 畢業(yè)設(shè)計(jì)（論文） 5 information from numerous sources in a consistent, enterprisewide fashion through the use of the JMI API. Java in Industrial Settings Many people know Java only as a tool on the World Wide Web that enables sites to perform some of their fancier functions such as interactivity and animation. However, the actual uses for Java are much more widespread. Since Java is an objectoriented language, the time needed for application development is minimal. In addition, Java39。s automatic memory management and lack of pointers remove some leading causes of programming errors. Most importantly, application developers do not need to create different versions of the software for different platforms. The advantages available through Java have even found their way into hardware. The emerging new Java devices are streamlined systems that exploit work servers for much of their processing power, storage, content, and administration. Benefits of Java The benefits of Java translate across many industries, and some are specific to the control and automation environment. Java39。s ability to run on any platform en
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