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"Relational Set Operators" Please respond to the following:
A relational Database Model allows database users to analyze data thoroughly. To accomplish this, advanced commands such as UNION and INTERSECT may be used. Describe a business scenario where a UNION relational set operator may be used to merge two similar data sets. Within the context of your business scenario, analyze the analysis and data consistency advantages of using a UNION operator rather than simply merging two data sets into one result table. Suppose you are tasked with finding common data elements amongst various data sets. Specify how an INTERSECT operator may assist you in accomplishing this task. Construct a query that can perform the same function as the INTERSECT operator without using the "INTERSECT" syntax within the query. Note: The Strayer Oracle Server may be used to test and compile the SQL Queries developed.
"Advanced SQL and PL / SQL" Please respond to the following:
Extracting and interpreting data can be very valuable to an organization. Describe the importance of using sub queries in a database system. Provide at least two business case scenarios to support your response.
A good IT professional is able to be versatile in SQL programming styles. Identify at least two possible advantages of utilizing PL / SQL instead of standard SQL Syntax. Explain whether either syntax provides enhanced code processing capabilities with examples. Note: The Strayer Oracle Server may be used to test and compile the SQL Queries developed
question 1. calculate the tax on an ordercomplete the following steps to create a procedure to calculate the tax on an
submit the table creation statements for the database model. submit them all in a single script file.also submit a
Write a SELECT statement that returns these two columns - CategoryName The CategoryName column from the Categories table
prepare a query to show the customer id and customer name in given database.
Law Associates is a large legal practice based in Sydney. You have been asked to design a data model for the practice based upon the following specification
Create and submit a screenshot of your database diagram based on the tables, and generate the data definition language (DDL) for each table.
Create a view named ProductSummary that uses the view you created in exercise 4. This view should return some summary information about each product.
Write a perl subroutine for temperature conversion named ' convert_temp '. It should be able to handle both Fahrenheit to Celsius conversions as well as Celsius to Fahrenheit conversions.
Write the statement which creates table named Part, with Id field as an int idendity PK, a SupplierId int field, a Description string field of size 25, a Count int field, a Class string field
Create the detail report which will display all SCR courses in alphabetical order, with a course name and instructor name in the group header.
Use the script below to create an updateable view named balance_due_view. Then, create and test an INSTEAD OF trigger named invoices_instead_of_insert that lets the user update the columns in the view by directly updating the Invoices table.
Write down SQL needed to create employee table containing the following data: employeeID, text, length of 5, primary key lastName, text, length of 25
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