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Naming ConventionsThe similar naming conventions apply to all PL/SQL program items and units including the variables, cursors, constants, cursor variables, procedures, exceptions, functions, and packages. The Names can be simple, remote, qualified, or both qualified and remote. For illustration, you might use the procedure name raise_salary in any of the following ways shown below:raise_salary(...); -- simpleemp_actions.raise_salary(...); -- qualifiedraise_salary@newyork(...); -- remoteemp_actions.raise_salary@newyork(...); -- qualified and remoteIn the first condition, you basically use the procedure name. In the second condition, you should qualify the name using the dot notation as the procedure is stored in a package named as the emp_actions. In the third condition, using the remote access indicator (@), you reference the database link newyork as the procedure is stored in the remote database. In the fourth condition, you qualify the procedure name and reference the database link.
At times, customers make mistakes in submitting their orders and call to cancel the order. Brewbean’s wants to create a trigger that automatically updates the stock level of all pr
Pl/SQL Expressions The Expressions are constructed by using the operands and operators. An operand is a constant, literal, variable, or function call which contributes a value
Using Subqueries A subquery is a query (typically enclosed by parentheses) that appears within another SQL data manipulation statement. If evaluated, the subquery gives a va
Project Description: I am looking to change FullCalendar to add/delete sql server data when events are removed or dropped from Calendar. Events should only be included by dra
1. Create a procedure called TAX_COST_SP to accomplish the tax calculation task. Keep in mind that the state and subtotal values are inputs into the procedure and the procedure is
Overview of control structures According to the structure theorem, any computer program can be written by using the basic control structures as shown in figure below. They can b
Cursor Attributes The Cursors and cursor variables have 4 attributes which give you helpful information about the execution of a data manipulation statement. Syntax:
%NOTFOUND The %NOTFOUND is the logical opposite of the %FOUND. The %NOTFOUND yields TRUE when an INSERT, UPDATE, or DELETE statement affected no rows, or the SELECT INTO state
LONG and LONG RAW You use the LONG datatype to store the variable-length character strings. The LONG datatype is such as the VARCHAR2 datatype, except that the maximum length o
Implicit Cursor is declared and used by the oracle environment internally. while the explicit cursor is declared and used by the external user. more over implicitly cursors are no
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