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Product-specific Packages
The Oracle and different Oracle tools are supplied with the product-specific packages which help you to build the PL/SQL-based applications. For illustration, the Oracle is supplied with a lot of utility packages, a few of that are highlighted below.
DBMS_STANDARD
The Package DBMS_STANDARD gives language facilities which help your application interact with the Oracle. For illustration, the procedure raise_application_error issue a user-defined error messages. In that way, you can report the errors to an application and evade returning the unhandled exceptions.
DBMS_ALERT
The Package DBMS_ALERT use the database triggers to alert an application when the definite database values change. The alerts are asynchronous (i.e., they operate separately of any timing mechanism) and transaction based. For illustration, a company may use this package to update the value of its investment portfolio as the new stock and bond quotes arrive.
1.( /5 marks) Suppose that a B+-tree index with the search key (dept_name, building) is available on relation department. What would be the best way to handle the following selecti
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Parameter and Keyword Description: cursor_name: This identifies an explicit cursor formerly declared within the present scope. cursor_variable_name: These identif
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Consider the following set of database tables (same tables from Assignment 6-1). Please take note of foreign keys (most of them carry the same names as the corresponding primary ke
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