Otherwise, you cannot compile a function or procedure without having any lines of code within it.In some cases, you can pair NULL with GOTO to avoid having to execute additional statements.The Oracle Database (8.1.6 version and above) is also needed which fully support Java Stored Procedures.
The NULL statement does nothing except pass control to the next executable statement. There are several reasons, described in the following sections.
Sometimes, it’s helpful to avoid any ambiguity inherent in an IF statement that doesn’t cover all possible cases.
You can implement the XML validation process in either the client-side or the mid-tier applications, but if you want either: Then putting your data validation process inside a trigger or your PL/SQL procedures on the server-side is a good solution.
Since there is not a built-in PL/SQL API to do XML Schema validation, we can create one using Java Stored Procedure.
: XSD-2105: (Error) Identity constraint validation error: 'Key sequence not found in key reference'.
| | Parser Exception: Invalid value of attribute: '1999-11-31' PL/SQL procedure successfully completed.Most of you will never have to use the GOTO statement; there are very few occasions where it is truly needed.If you ever do use GOTO, however, you should remember that when you GOTO a label, at least one executable statement must follow that label.You need to set xmlparserv2.jar, and classes12to the CLASSPATH. If you are using JDK 1.1.x, classes111is required to be used. Before loading the Schem Util.class into the Database, we need to check if the correct version of the two dependent XDK Packages are loaded into the logon database schema (in this case xdkdemo/xdkdemo).Before loading the Schema Util.class, make sure that the loaded XML Parser has the same version with which you compiled the Schema Util.class.A field with a NULL value is a field with no value.