Create a MySQL trigger named trg_updatecustbalance to update the CUST_BALANCE in the CUST_MYSQL table when a new invoice record is entered. (Assume that the sale is a credit sale.) Whatever value appears in the INV_AMOUNT column of the new invoice should be added to the customer’s balance. Test the trigger using the following new INV_MYSQL record, which would add 225.40 to the balance of customer 2001:

Task 6: The Car Maintenance team considered that the available maintenance tasks should also have the price information in the database. Alter the MAINTENANCE_TYPES table to include a new column named MAINTENANCE_PRICE of type FLOAT.   ANSWER IN MYSQL PLEASE

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Create a table in SQL developer and name it as ‘MyCrush’. The table should consists of only three attributes as follows: Crush_ID which will be the primary key with the number length of .Crush_Name with the maximum character length of 30.Crush_Description with the maximum character length of 10.Insert exactly three records with the above given attributes. Crush_ID values should be 1, 2 and 3 for the three records. Crush_Description should be ‘Present’ for record 1, ‘Past’ for record 2 and ‘Childhood’ for record 3. If you don’t have any crush from your childhood to present, you can insert some random names. Hmm.. Seems Interesting!! It’s time to implement your programming skills using PL/SQL stored procedures and functions. Create another table called ‘MyDetails’ and should contain exactly four attributes as below: Student_ID,Student_Name ,Student_Term ,Student_GPA If you are not a Master’s student, let’s assume you are a student pursuing masters and taking four semesters or terms.…