Building Oracle XML Applications by Steve Muench

By Steve Muench

Oracle company, devoted to aiding XML in quite a lot of items, has XML-enabled its whole Oracle net platform--the Oracle8»i database, Oracle interMedia, Oracle program Server, and quite a few different items. «Building Oracle XML purposes, by way of Steve Muench, Oracles lead «XML evangelist» and a key Oracle XML developer, supplies Java and PL/SQL builders a wealthy and distinctive examine the numerous instruments Oracle has supplied to aid XML improvement, resembling the Oracle XML Parser, the Oracle XML SQL application, and the XSQL Servlet. the corporate describes Oracle8»i as «the first XML enabled database.» This publication indicates easy methods to mix the facility of XML and XSLT with the rate, performance, and reliability of the Oracle database to construct versatile purposes. the writer gives you approximately 800 pages of exciting textual content, worthwhile and time-saving tricks, and huge examples that builders can placed to exploit instantly to construct customized XML purposes. items lined contain: XSQL pages and the XSQL servlet: declarative templates and an intensive framework to gather any type of static or dynamic XML details and rework it for supply utilizing XSLT stylesheets.JDeveloper: an entire built-in improvement surroundings for Java XML builders, together with modifying, syntax checking, debugging, and extra. XSLT Processor: a product that allows XML details to be awarded and introduced in lots of alternative ways, utilizing any web-based layout, either in and out the database. XML SQL software: an Oracle application that works with the result of SQL statements as XML records and makes use of XML files to insert, replace, and delete info from database tables, perspectives, andobject views.XML Parser: a product that shall we Java, PL/SQL, C, and C++ builders method and build XML.interMedia: a product whose textual content choice we could builders seek XML records from SQL and leverage the XML record constitution for razor-sharp seek precision.Advanced Queuing: an Oracle queuing mechanism that shall we either PL/SQL and Java courses enqueue and and dequeue XML messages. PLSXML utilities: Oracle PL/SQL utilities that allow builders utilizing any model of Oracle produce XML from SQL statements. The accompanying CD-ROM comprises JDeveloper 3.1, an built-in improvement atmosphere for Java builders.

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Example text

74"> Bank of America Tina exports her tax

and posts it to Tax Time. 2. 2. 74"> Bank of America
The document is now ambiguous, since the element appears twice, meaning two different things, as does the element. This is precisely the ambiguity that XML namespaces are designed to remedy.

7. DTD-declared default attributes appear automatically Let's look at an example of the other kind of effect: validation errors. If we try the oraxml command on this file we get the message: The input file parsed without errors So the file is well-formed, but is it valid with respect to the DTD? Let's find out. xml XML-0141: (Error) Attribute value 'Silly' should be one of the declared enumerated values. xml XML-0150: (Error) Element FAQ not complete, expected elements '[Answer]'.

Name Attribute named Name * Any element @* Any attribute text( ) Text node Name [ BoolExpr ] Element Name if boolean expression BoolExpr predicate is true Name [position( ) = n ] n th Name element Name [ n ] nth Name element ( ListExpr )[ n ] n th node in list of nodes matching ListExpr Name1 | Name2 Elements Name1 or Name2 ( ListExpr )[ BoolExpr ] Nodes in ListExpr where predicate BoolExpr is true. //Name ..

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