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Assignment Question -

Write and run SQL statements to complete the following tasks

Part A - DML

1. Locate the record in the vendor table that does not have a value for the attribute V_STATE

2. Find the customers whose balance is greater than $300 but less than $400.

3. Show the names of the customers for whom we have invoices.

4. What is the max balance?

5. Show the CUS_CODE of the customers for whom we DO NOT have invoices.

6. Show the names of the customers for whom we DO NOT have invoices.

7. Find out how many times a customer generated an invoice - make sure the counted column heading reads "Invoices_generated".

8. List the names of the customers and how many times a customer generated an invoice - make sure the counted column heading reads "N_Of_Invoices" .

Part B - DDL

1. Add a new row/record to the `customer` table to include your actual student_ID in the CUS_CODE, your last_name as the CUS_LNAME` and your firstname as CUS_FNAME. Add any other details of your choice in all the other fields.

2. Add a new attribute (field) credit_history VARCHAR(6) to the customer table.

3. Update credit_history for customer '10011' to 'Bad'.

4. Delete the employee Leighla Genkazi from the EMP table.

5. Add a new attribute called ‘email_address' to ‘emp' table with data type and length ‘VARCHAR(20).

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  • Category:- DBMS
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