user-defined exceptionsthe plsql defines the
User-Defined Exceptions
The PL/SQL defines the exceptions of your own. Dissimilar to the predefined exceptions, the user-defined exceptions should be declared and should be raised explicitly by the RAISE statements.
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rephrase conditional control statementswhen computing a logical expression the plsql uses short-circuit evaluation that is the plsql stops evaluating
ensuring backward compatibility the plsql version 2 permits some abnormal behavior which version 8 disallowsparticularly version 2 permits you toi
exception handlingin the plsql a warning or error condition is known as an exception the exceptions can be internally defined by the run-time system
advantages of exceptionsusing the exceptions for the error handling has many benefits without an exception handling every time you issue a command
user-defined exceptionsthe plsql defines the exceptions of your own dissimilar to the predefined exceptions the user-defined exceptions should be
declaring exceptionsthe exceptions can be declared only in the declarative part of the plsql subprogram block or package by introducing its name you
scope rulesyou cannot declare an exception twice in the similar block though you can declare the similar exception in 2 different blocks the
using exceptioninitto handle unnamed internal exceptions you should use the others handler or the pragma exceptioninit the pragma is a compiler
using raiseapplicationerrorthe package dbmsstandard that is supplied with oracle gives language facilities that help your application to interact
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