Consider the following Book Rental database schema:

Student (SID, SName, SMobile, Collage, Section, Level, Address, Email)

Loan (SID, ISBN, LDate, Lduration, Returned)

Book (ISBN, BName, Topic, Avalible_ copy, Type, ASSN)

Author (SSN, AName, AAddress)

Give the SQL-DDL definitions for these database objects, use appropriate data types and include the following integrity constraints in the DDL definition:

Identify and include referential integrity constraints that should hold in this database.

Student Name, Mobile, college and section is a mandatory field, and student default address is "Riyadh, KSU" Book Type should be one of the following: book, journal or research. Topic is a mandatory field.

The Loan duration should not exceed 14 day.

A student cannot be deleted if he/she borrowed a book.

An author cannot be deleted if he wrote a book.

If we delete/update a book then we have to remove/update all loans belonging to it.

NOTE: Since the data type of the FK must match the data type of PK in which they reference to, thus it would be better if we define a domain to hold the data type of both of them and any additional constraints shared between them to avoid errors.