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- First create a Query "YourFirstName Customers without contact information" displaying Company Names of customers who do not have either a contact name or telephone or fax number. Printscreen: Design view of Query. Datasheet view of Query.Any attribute or combination of attributes that can be used to uniquely distinguish one row from another is called a _______________ . Question 41 options: 1) foreign key 2) candidate key 3) secondary key 4) simple key 5) composite key15. Which one of the following attribute can be taken as a primary key ? a. Name b. Street c. Id d. Department
- 2. A data base has four tables, customer, rental, agent and cars. You are creating a query that will display data from the rental and cars tables. Which of the following statements will need to be in your query? Select one: a. select rental, cars b. none of those listed c. where rental=cars d. from rental, cars23. Which of the following is a group of one or more attributes that uniquely identifies a row? a. Key b. Determinant c. Tuple d. RelationSubject : Data base management system( MY SQL LIVE) NOTE: write queries for following. 1. Make a table bonus (bonus Id, bonus amount, department no), insert information of multiple departments with department numbers 2, 4, 10, 15, 20 and 25. 2. Delete row when department no is equal to 20, 3. Increment bonus amount when department no is equal to 10 , 4. Delete row where department is between 10 and 20. 5. Delete rows where department number is greater than 20
- The usage of indices speeds up query processing, but it's typically a bad idea to create one for every potential search key. Why?Following tables support the database of a shopping store. The schema contains four tables i.e.Customer, Product, Order and Order Product. Table details including attributes, primary keys(underline) and foreign keys (bold) are also shown below:CUSTOMER(CustID, CustName, CustEmail, CustPhone, CustCNIC)PRODUCT(ProdID, ProdName, ProdPrice)ORDER(OrderID, OrderDate, OrderPrice, CustID)ORDER_PRODUCT(OPID, ProdID, OrderID) i. Write SQL queries to create all above mentioned four tables in SQL. Must take care of correct data type and constraints (primary key, foreign key, not null etc.) where necessary. ii. Write a SQL query to get all customers’ data who use “yahoo” email. iii. Write a SQL query to show all product names that are in price range of 500 – 1500 (both inclusive) in descending order.Following tables support the database of a shopping store. The schema contains four tables i.e.Customer, Product, Order and Order Product. Table details including attributes, primary keys(underline) and foreign keys (bold) are also shown below:CUSTOMER(CustID, CustName, CustEmail, CustPhone, CustCNIC)PRODUCT(ProdID, ProdName, ProdPrice)ORDER(OrderID, OrderDate, OrderPrice, CustID)ORDER_PRODUCT(OPID, ProdID, OrderID)
- Following tables support the database of a shopping store. The schema contains four tables i.e.Customer, Product, Order and Order Product. Table details including attributes, primary keys(underline) and foreign keys (bold) are also shown below:CUSTOMER(CustID, CustName, CustEmail, CustPhone, CustCNIC)PRODUCT(ProdID, ProdName, ProdPrice)ORDER(OrderID, OrderDate, OrderPrice, CustID)ORDER_PRODUCT(OPID, ProdID, OrderID) 1) What results will be produced by execution of following query? SELECT c.CustName FROM Customer c WHERE c.CustCNIC LIKE ‘35201-%-0’; 2) What is the difference between these two queries A and B? Will they both produce same result or not? And Why? (A) SELECT AVG(p.ProdPrice) FROM Product p;(B) SELECT AVG(DISTINCT p.ProdPrice) FROM Product p; 3) Write a SQL query to show how many orders of amount more than 1000 are placed in the month of August 2021.Following tables support the database of a shopping store. The schema contains four tables i.e.Customer, Product, Order and Order Product. Table details including attributes, primary keys(underline) and foreign keys (bold) are also shown below:CUSTOMER(CustID, CustName, CustEmail, CustPhone, CustCNIC)PRODUCT(ProdID, ProdName, ProdPrice)ORDER(OrderID, OrderDate, OrderPrice, CustID)ORDER_PRODUCT(OPID, ProdID, OrderID) iii. Write a SQL query to show all product names that are in price range of 500 – 1500 (both inclusive) in descending order.Execute Queries to Retrieve Information from the AdventureWorks database 6. 1. List all employees with their ID, last name, first name, job title, and date of birth. Sort the list by their last name, then their first name. You will use HumanResources.Employee and Person.Person. 2. List the top 5 sales people based on the YTD sales. Include their name in the format lastname, firstname, i.e. Williams, Terry. Include the SalesYTD and their commission YTD. Make sure all columns have names. You will use Sales.SalesPerson and Person.Person. Use table aliases for both tables
