Remote operations in pl sql, PL-SQL Programming

Assignment Help:

Remote Operations:

As the illustration shows below, the PL/SQL subprograms can execute the dynamic SQL statements which refer to the objects on a remote database:

PROCEDURE delete_dept (db_link VARCHAR2, dept_num INTEGER) IS

BEGIN

EXECUTE IMMEDIATE 'DELETE FROM dept@' || db_link ||

' WHERE deptno = :n' USING dept_num;

END;

The targets of remote procedure calls (RPCs) can also contain the dynamic SQL statements. For illustration, assume that the following stand-alone function, that returns the number of rows in the table, reside on the Chicago database:

CREATE FUNCTION row_count (tab_name CHAR) RETURN INT AS

rows INT;

BEGIN

EXECUTE IMMEDIATE 'SELECT COUNT(*) FROM ' || tab_name INTO rows;

RETURN rows;

END;

From an unspecified block, you may call the function remotely, as shown below:

DECLARE

rows INTEGER;

BEGIN

rows := row_count@chicago('emp');


Related Discussions:- Remote operations in pl sql

I need a ppd-cpa or filesharing site, PPD , CPA, Filesharing Site Projec...

PPD , CPA, Filesharing Site Project Description: This is very easy I need a PPD , CPA, Filesharing Site. [PPD] stands for (pay per download) example hotsharecash [Files

Table represents an extension - sql, Table Represents an Extension - SQL ...

Table Represents an Extension - SQL It describes how each tuple in a relation represents a true instantiation of some predicate and each true instantiation is represented by s

Avoiding collection exceptions, Avoiding Collection Exceptions   In ma...

Avoiding Collection Exceptions   In many cases, if you reference a nonexistent collection element, then PL/SQL raises a predefined exception. Consider the illustration shown b

Pits, PITS Depressions in secondary cell wall is called pit. A pi...

PITS Depressions in secondary cell wall is called pit. A pit present on the free cell wall surface without its partner is called Blind pit. It consists of 2 parts -

Keyword and parameter description - delete statement, Keyword and Parameter...

Keyword and Parameter Description: table_reference: This specifies a table or view that should be accessible when you execute the DELETE statement, and for that you must

Using operator deref - manipulating objects in pl sql, Using Operator DEREF...

Using Operator DEREF: You cannot navigate through refs within the PL/SQL procedural statements. Rather than, you should use the operator DEREF in the SQL statement. The DEREF

Restriction and and - sql, Restriction and AND - SQL Restriction is av...

Restriction and AND - SQL Restriction is available via the WHERE operator, and so it is in SQL. However, by Example showing how a certain simple restriction can be expressed u

Design a script and integrate procedures, Initial thought process: Design...

Initial thought process: Design a script which was simple and user friendly. Integrate procedures/functions to extract data under the hood. I focused on giving the user the opt

Manipulating objects in pl sql, Manipulating Objects: You can use an o...

Manipulating Objects: You can use an object type in the CREATE TABLE statement to indicate the datatype of a column. When the table is created once, you can use the SQL statem

Program, heap sort program in pl/sql

heap sort program in pl/sql

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd