You have normalized your database. data exists just once. you need to delete data in a parent table (customer) that has a relationship with another table (address ). which technique can change the data appropriately in both tables?

a. use a stored procedure
b. use a user -defined function
c. use a dml trigger
d. use a ddl trigger

Acontact list is a place where you can store a specific contact with other associated information such as a phone number, email address, birthday, etc. write a program that first takes in word pairs that consist of a name and a phone number (both strings). that list is followed by a name, and your program should output that name's phone number.