5. Create a table named BOOK_STORES to include the columns listed in the following chart. 6. Add a constraint to make sure the Rep_ID value entered in the BOOK STORES table is a valid value contained in the STORE_REPS table. The Rep_ID columns of both tables were Initially created as different datatypes. Does this cause an error when adding the constraint? Make table modifications as needed so that you can add the required constraint. Constraint Comments Column Name Store ID PRIMARY KEY column Datatype NUMBERS VARCHAR2(36 VARCHAR2(30) Same Should he UNIQUE and NOT NULL Contact Rep D VARCILAR2(5) 7. Change the constraint created in Assignment #6 so that associated rows of the BOOK_STORES table are deleted automatically If a row in the STORE_REPS table is deleted. 8. Create a table named REP_CONTRACTS containing the columns listed in the following chart. A composite PRIMARY KEY constraint including the Rep_ID, Store_ID, and Quarter columns should be assigned. In addition, FOREIGN KEY constraints should be assigned to both the Rep_ID and Store_ID columns. Column Name Datatype Store_ID NUMBER(8) Name NUMBER(5) Quarter CHAR(3) Rep_ID NUMBER(5) 9. Produce a list of information about all existing constraints on the STORE_REPS table. 10. Issue the commands to disable and then enable the CHECK constraint on the Base salary column