face separated from the implementation in a PL/SQL pac

In a PL/SQL package, why split the interface from the implementation?

Outlining the SQL Environment's architecture and its constituent pieces is crucial.

What are the benefits of having a SQL standard when there are so many differences between vendors?

Based on the table provided, answer the following questions in relational algebra.

Is it crucial to have server-side scripting like PHP? Does sql really need this?

Explain Sample Java code snippet for an SQL transaction?

What is the utility of the IIF function in SQL for conditional logic?

What distinguishes Structured Query Language (SQL) from other computer languages?

WRITE THE OF MYSQL IN PYTHON, JUST ANSWER THE 2ND QUESTION BY LOOKING AT THE FIRST QUESTION Create database and tables as given below by using Python. (a)  Market database (b)  Vendor: vendor id integer, vendor name varchar, license start date, license end date (c)  Item:itemidinteger,itemnamevarchar,itemtypevarchar, previous price float, last sold date date (d)  Auction: auction id integer, vendor id integer, item id integer, price float Choose primary and foreign keys depending on the relations in Market database design. Create arrays of at least 5 di↵erent records. Use these arrays to populate each table in the database.