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Prior to the adoption of SQL as a standard by the American National Standards Institute (ANSI), each database management system (DBMS) had its own unique command language and syntax. SQL was adopted as an ANSI standard in 1986. The International Standards Organization (ISO) adopted it in 1987. This standard enables database portability.Most commercial database vendors support the ANSI standard. However, most of these vendors also extend the standard with the addition of proprietary features. The Oracle version of SQL has differences from the ANSI standard version. For example, Oracle does not support either the full OUTER JOIN or the NATURAL JOIN of ANSI SQL.When you have a choice, the vendor specific proprietary solution may offer better performance or convenience. On the other hand, the proprietary feature also limits or eliminates portability.Think about the strengths and weaknesses of both the standard ANSI and proprietary Oracle approach to SQL. In particular, think about the different ways ANSI and Oracle support joins.With these thoughts in mind:Consider a situation where you would use a join to retrieve data from two tables in an Oracle database, such as the stock_count for an oil filter from the product table and the vendor for that oil filter from the vendor table. Would you prefer to use ANSI standard SQL or the proprietary Oracle SQL? What factors influenced your decision? Describe a situation where you would consider using the other option.
Create a database model and Submit the table creation statements for the Database Model.
Write PL/SQL procedures and functions to populate and query that database
Write a query to display using the employees table the EMPLOYEE_ID, FIRST_NAME, LAST_NAME and HIRE_DATE of every employee who was hired after to 1 January, 1995.
Run the lab_03_01.sql script in the attached file to create the SAL_HISTORY table. Display the structure of the SAL_HISTORY table.
Write a query to display the last name, department number, and salary of any employee whose department number and salary both match the department number and salary of any employee who earns a commission.
Write down a SQL insert statement to insert new row in "CDS" table.
Write down actors (or actress, your choice, but not both) who have won at least two (2) Academy Awards for best actor/actress. Provide the actor name, movie title & year. Order the result by actor name."
What is an SQL injection attack? Explain how it works, and what precautions must be taken to prevent SQL injection attacks.What are two advantages of encrypting data stored in the database?
Given the series RLC resonant circuit in the figure, operating at variable frequency, determine: The resonant frequency ω o , The circuit’s quality factor Q , The cut-off frequencies, f 1 & f 2 and the bandwidth BW
Write summary query which uses CUBE operator to return LineItemSum (which is the sum of InvoiceLineItemAmount) group by Account(an alias for AccountDesciption).
As DBA, your manager called a meeting and asked why there are so many orders for customers that don't exist in the customer table. Write query which would shows which customers were missing for existing orders. Use a join or a subquery.
Turn this SQL query into a relational algebra statement? SELECT Request.reqfor, Ordering.invamt, Ordering.invnbr, Ordering.invdat
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