create a table for the class entity in an ER diagram of a school system. Show the composite key in class table. Fill the table with 4 records. At what level in the database architecture we create tables ?

Q: When converting an ERD to a database design, Foreign key(s) for a M:N (many-many) relationship are…

A:

Q: 1. what is the relationship between Functional Dependency and Normalization? 2. partial dependency…

A: step 1 The answer for above questions is given in the below step;

Q: Why do you think entity relationship (ER) diagrams in database design are necessary?

A: Entity Relationship Diagram is a conceptual, graphical, and logical structure of a database. Entity…

Q: my question is about database; i have a data trainer_id , with description (should increment). what…

A: Datatype = int (integer) Size= 4 bytes

Q: 10. Draw an E/R diagram for a local restaurant, Tony's. You need to create a database to keep track…

A: ER Diagram is given below. Customer, Item and Order are Entities. Customer is related to Order by…

Q: What is functional dependency in the context of normalization, and how does it relate to database…

A: Functional dependency is a fundamental concept in database normalization that defines the…

Q: Task 2 Using the scenario, produce Design Documentation for Plug-Ins Electronics. Your database…

A: Er diagram or entity relationship diagram gives a brief lookout for all the entities present in a…

Q: Whenever time one object has the main key of another entity as an attribute, a Parent-Child…

A: Whenever time one object has the main key of another entity as an attribute, a Parent-Child…

Q: database design for both the CD Database problem and the Warehouse Problem

A:

Q: What are Multivalued attributes? What is their value for database design?

A: Multivalued attributes are attributes that can have multiple values for a single entity. For…

Q: Explain the concept of transitive dependency in a database and how it can be resolved through…

A: Transitive dependency is a situation which occurs when a non-prime attribute depends upon another…

Q: Assume that two students are trying to register for a course in which there is only one open seat.…

A: Given:   There are two students in the college who need to register for the course. But obviously,…

Q: Implement a new independent entity phone in the Sakila database. Attributes and relationships are…

A: There is only one error in the above code and that is the ALTER TABLE command on the address table.…

Q: Let's pretend there are two students interested in enrolling in a single class. Which aspect of a…

A: A Database can be defined as the information about people, for example, users or customers, that is…

Q: Is it ever a good idea to use composite primary keys? What are your thoughts on using composite…

A: Composite primary keys are a special type of primary key.

Q: Convert this ER model to a list of tables (Please provide a picture of the tables from Access)…

A: ER diagram stands for Entity relationship diagram and it contains mainly three components that…

Q: Discuss the benefits of Second Normal Form (2NF) and Third Normal Form (3NF) in database design.

A: In the field of database design, normalization is a crucial process to organize data efficiently and…