Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Predefined Exceptions
The internal exception is raised implicitly whenever your PL/SQL program exceeds a system-dependent limit or violates an Oracle rule. Each & every Oracle error has a number, but exceptions should be handled by the name. Therefore the, PL/SQL predefines some general Oracle errors as exceptions. For illustration, the PL/SQL raises the predefined exception NO_DATA_FOUND when a SELECT INTO statement returns no rows.
You can use the OTHERS handler, to handle the other Oracle errors. The SQLCODE & SQLERRM functions are primarily very helpful in the OTHERS handler since they return the message text & the Oracle error code. Otherwise, you can use the pragma EXCEPTION_INIT to relate an exception names with the Oracle error codes.
The PL/SQL declares predefined exceptions globally in the package STANDARD that defines the PL/SQL atmosphere. Therefore, you need not declare them yourself. You can write the handlers for predefined exceptions using the names shown in the list below. The corresponding Oracle error codes and SQLCODE return values are also shown.
A short description of the predefined exceptions is as shown below:
Cause of Indeterminacy in SQL One root cause of indeterminacy in SQL lies in its implementation of comparison for equality. For certain system-defined types it is possible for
Question: (a) The objective of query optimization is to choose the most efficient strategy for implementing a given relational query, thereby improving the system performance. On
IS NULL Operator The IS NULL operator returns the Boolean value TRUE whenever its operand is null or FALSE if it is not null. The comparisons including the nulls always yield NU
Package Specification The package specifications contain the public declarations. The scopes of these declarations are local to your database representation and global to the
Parameter Aliasing To optimize the subprogram call, the PL/SQL compiler can decide between the two techniques of the parameter passing. With the by-value techniques, the v
The SQL ‘CREATE TABLE' scripts for all the tables you have implemented. Note that your tables must correspond exactly to the ERD you have provided in 1. above, or you will lose ma
Package Body: The package specification is implemented by the package body. That is, the package body has the definition of every cursor and the subprogram declared in the pac
Blocks: The fundamental program unit in the PL/SQL is the block. The PL/SQL block is defined by the keywords BEGIN, DECLARE, EXCEPTION, and END. These keywords partition the b
3CX PBX sync Windows Service Project Description: !! You require access to a commercial version of the 3CX PBX system in order to be able to program the API !! !! You requ
Parameter and Keyword Description: select_item: This select_item is a value returned by the SELECT statement, and then assigned to the equivalent variable or field in the
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd