PL/SQL DB Programming

**_Please Download the Zip file to see the full description and the attached files.

_**1. Write a PL/SQL subprogram that takes the old and new values of the zip code as user input and performs an update of zip code values in the mail-order database “[url removed, login to view]? “see the attachment?? (you don’t need to create the tables and populate the records from within your program. You should create the tables and populate the records manually.) Note that zip code values appear in three different tables: ZIPCODES, CUSTOMERS and EMPLOYEES. Note also the foreign key referential integrities on zip code. You can assume that a given zip code is always mapped to exactly one city. However, the program should handle special situations such as when the zip code to be changed does not exist in the database. In such cases, an appropriate message should be printed. Further, the program should always maintain the integrity of the underlying database. <P align=left>**Note that you should not create temporary tables to accomplish the task. You cannot use cascade updates/deletes nor triggers!** <P align=left>**The table names, columns, and the data types should be the same as what is defined in the create_mail.sql.** <P align=left>You should wrap your subprogram within an anonymous PL/SQL block.

Program 2 and 3 in the zip file.

## Deliverables

1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.

2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables):

a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment.

b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request.

3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement).

## Platform


Habilidades: Engenharia, MySQL, Oracle, PHP, Arquitetura de software, Teste de Software

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