Using invoker rights in pl sql, PL-SQL Programming

Assignment Help:

Using Invoker Rights:

By default, the stored procedure executes with the privileges of its definer, not its invoker. These procedures are bound to the schema in which they inhabit. For illustration, suppose that the following stand-alone procedure, that can drop any type of the database object, resides in the schema scott:

CREATE PROCEDURE drop_it (kind IN VARCHAR2, name IN VARCHAR2) AS

BEGIN

EXECUTE IMMEDIATE 'DROP ' || kind || ' ' || name;

END;

Also suppose that the user jones has been granted the EXECUTE privilege on this procedure. When the user jones calls drop_it, as shown, the dynamic DROP statement executes with the rights of user scott:

SQL> CALL drop_it('TABLE', 'dept');

Moreover, the unqualified reference to table dept is solved in the schema scott. Therefore, the procedure drops the table from schema scott, not from the schema jones. Though, the AUTHID clause enables the stored procedure to execute with the privileges of its invoker. These procedures are not bound to the particular schema. For illustration, the version below of the drop_it executes with the privileges of its invoker:

CREATE PROCEDURE drop_it (kind IN VARCHAR2, name IN VARCHAR2)

AUTHID CURRENT_USER AS

BEGIN

EXECUTE IMMEDIATE 'DROP ' || kind || ' ' || name;

END;


Related Discussions:- Using invoker rights in pl sql

Cartesian product, Using a Join on 2 tables, select all columns and all row...

Using a Join on 2 tables, select all columns and all rows from the tables without the use of a Cartesian product. Query: SELECT * FROM EMPLOYEE1 JOIN CONTRACT ON EMPLOYEE

I want to build website for funding, Project Description: I want to rebu...

Project Description: I want to rebuild it and add better content to it It will include up to 5 forms The data will be saved on SQL server and the data access layer could b

Query, ALTER TABLE bb_basketitem ADD CONSTRAINT bitems_qty_ck CHECK (quan...

ALTER TABLE bb_basketitem ADD CONSTRAINT bitems_qty_ck CHECK (quantity BEGIN INSERT INTO bb_basketitem VALUES (88,8,10.8,21,16,2,3); END; Brewbean’s wants to add a check

Constants and variables in pl sql, Constants and Variables:   You can...

Constants and Variables:   You can declare the constants and variables in the declarative section of any PL/SQL subprogram, block, or package. The Declarations allot the stor

If statement - syntax, IF Statement The IF statement executes a series ...

IF Statement The IF statement executes a series of statement conditionally. Whether the series is executed or not depends on the value of the Boolean expression. Syntax:

Use the pls_integer datatype - performance of application, Use the PLS_INTE...

Use the PLS_INTEGER Datatype When you require to declare an integer variable, use the datatype PLS_INTEGER that is the most efficient numeric type. That is as the PLS_INTEGER

Write a program to implement inverted file shown slider, Write a program to...

Write a program to implement the inverted file shown in the slides (Simple Index file, LabelID file and Data file).  Use the Avail_List to point at the deleted Label IDs so that th

Parameter and keyword description - select into statement, Parameter and Ke...

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

Bulk fetching - bulk bind performance improvement, Bulk Fetching The i...

Bulk Fetching The illustration below shows that you can bulk-fetch from a cursor into one or more collections: DECLARE TYPE NameTab IS TABLE OF emp.ename%TYPE; TYPE S

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 -

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