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Explain entity integrity and referential integrity rules in relational model.show how these aer realized in sql
Display the vendor ID and vendor name of the items whose item quantity is the largest and display the item ID and item quantity of all items whoseitem quantity is less than the average quantity. Also display the average quantity
List the employee_id and employee_name of the employees form the l_employees table with the top 4 credit limits.
Write an SQL statement to produce a single column called ItemLocation that combines the SKU_Description,the phrase "is located in."
Draw an Entity-Relationship Diagram (ERD) for the data storage requirements of a business described in the case study and Data Model Transformation.
Prepare the SQL query for each of given requirements. Convert requirement to logic, then to SQL. Illustrate the names of all products which have been sold.
Create a view named ProductSummary that uses the view you created in exercise 4. This view should return some summary information about each product.
How does the order of joins in an SQL statement affect the performance of the join and what can the DBA do to determine the preferred order of joins for an SQL statement that includes the join of at least three tables?
Give me a list of all the proposed prices for the next year from the l_foods table. Sort your results by proposed_price. (Note that proposed price, is price + price_increase.)
Write your queries so that the final answers will never include duplicates, but add the keyword DISTINCT only in cases where duplicates would otherwise be produced.
Write SQL statement which would select each of the following: names and owners of all Great Danes and all attributes of poodles whose balance is no greater than $50.
Write down a SQL insert statement to insert new row in "CDS" table.
Use the data on the Christensen worksheet in the range A1:J19 to create a PivotChart on a new sheet. Use the Type, Issue Price, and Est. Value fields and the default locations. Find the average issue price and average estimated value.
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