摘要: Play HBase with DataNucleus JDO
閱讀全文
摘要: The XQuery 1.0 specification describes a powerful language for accessing and manipulating XML. In its initial form XQuery lacks two interesting features: fast token-based text search and node-level update. Specifications for these features are under development at the W3C with release dates after XQuery 1.0. This paper looks at the mechanisms by which XQuery can support search and update based on our experience at Mark Logic implementing these features.
閱讀全文
摘要: Defines a (logical) model for an XML document -- as opposed to the data in that document -- and stores and retrieves documents according to that model. At a minimum, the model must include elements, attributes, PCDATA, and document order. Examples of such models are the XPath data model, the XML Infoset, and the models implied by the DOM and the events in SAX 1.0.
閱讀全文
摘要: Software AG是德國(guó)的一家多年從事系統(tǒng)軟件、ERP、電子商務(wù)產(chǎn)品和應(yīng)用解決方案的軟件廠商。
閱讀全文
摘要: 作為 Java 企業(yè)版 5 (Java EE 5) Enterprise Java Bean (EJB) 3.0 規(guī)范的組成部分，Java 持續(xù)性 API (JPA) 顯著簡(jiǎn)化了 EJB 持續(xù)性并提供了一個(gè)對(duì)象關(guān)系映射方法，該方法使您可以采用聲明方式定義如何通過一種標(biāo)準(zhǔn)的可移植方式（在 Java EE 5 應(yīng)用服務(wù)器內(nèi)部以及 Java 標(biāo)準(zhǔn)版 (Java SE) 5 應(yīng)用程序中的 EJB 容器外部均可使用）將 Java 對(duì)象映射到關(guān)系數(shù)據(jù)庫(kù)表。
閱讀全文
摘要: 在新增一條數(shù)據(jù)庫(kù)記錄時(shí),有時(shí)候密碼需要加密存儲(chǔ),此時(shí)我們采用MYSQL自帶的加密算法
閱讀全文