Which of the following is the correct relational model of the entity Judge (ignore foreign key due to Manage relationship)? (A) JUDGE ( JudgeID(PK), Name, FirstName, LastName, Title, YearPractice ) (B) JUDGE ( JudgeID(PK), FirstName, LastName, Title, YearPractice ) (C) JUDGE ( JudgeID(PK), Name, YearPractice ) (D) JUDGE ( JudgeID(PK), Name(PK), FirstName, LastName, Title, YearPractice ) Which of the following is the correct relational model of the entity Client? (A) CLIENT ( ClientID(PK), Phone, DoB, Age ) (B) CLIENT ( ClientID(PK), Phone, DoB )

a) Referring to the company database, which relations have the same set of attributes for their default superkey and primary key? b) Referring to the company database, which relations have a reasonable candidate key that is not its primary key? C) Referring to the company database, specify an update operation to the department relation that will violate a primary key constraint constraint. D) Referring to the company database, what constraints to the database would be violated if Smith were deleted from the employee relation? Include the relevant relations and attributes in your answer.

Implement a new independent entity phone in the Sakila database. Attributes and relationships are shown in the following diagram: The diagram uses Sakila naming conventions. Follow the Sakila conventions for your table and column names: All lower case Underscore separator between root and suffix Foreign keys have the same name as referenced primary key Write CREATE TABLE and ALTER TABLE statements that: Implement the entity as a new phone table. Implement the has relationships as foreign keys in the Sakila customer, staff, and store tables. Remove the existing phone column from the Sakila address table. Step 2 requires adding a foreign key constraint to an existing table. Ex: ALTER TABLE customer ADD FOREIGN KEY (phone_id) REFERENCES phone(phone_id) ON DELETE SET NULL ON UPDATE CASCADE; Specify data types as follows: phone_id, phone_number, and country_code have data type INT. phone_type has date type VARCHAR(12) and contains strings like 'Home', 'Mobile', and 'Other'. Apply…

Create an Entity Relationship Diagram (ERD) of the normalized version of this table using Visio's crows-foot notation. The ERD should show the PK and FK columns, plus all of the appropriate column attributes (column name, data type/size, null/not null) plus the relationships (with minimum and maximum cardinality) between tables. Requirements: Show the results of the normalization as individual tables Show the FK and PK columns using Visio's notation You must solve the multi-column issue with grades (Hint: This will require a new column) Show the 3-part column definition as noted Show min/max cardinality   Tables are attached