Can you please help me in how I can turn the Entity Relationship diagram into a Logical Database Diagram?  I know I need to list out all the entities, but I am not sure how to draw the relation. If you would please write it step by step for me so I can practice, that would be much appreciated.

Q: Can the foreign key be extracted from another table that is not connected to it in entity…

A: Foreign keys are a part of table which are being sourced from some column in a different table.

Q: Question 6 In order to make it easier to compare the relation scheme diagram to the UML diagram, we…

A: In order to make it easier to compare the relation scheme diagram to the UML diagram, we (check all…

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

A:

Q: It is essential to discuss the various database table possibilities when dealing with subtype…

A: A company's Contacts table may store supplier names, e-mails, and phone numbers.Because other…

Q: how do you translate an Entity Relational Diagram to a Relational Diagram?

A: We are going to learn conversion of Entity Relational Diagram to a Relational Diagram. It takes…

Q: Normalise the answer from Q.5.2 to third normal form (3NF), showing all steps with explanations. The…

A: Please check the step 2 for solution

Q: It is a "Database Design" Subject. Please answer the following question. An arc is a constraint…

A: An entity-relationship model is used for defining and displaying the relationship's between the…

Q: What are three advantages of using a surrogate key rather than the main key to access a relation…

A: A surrogate key is a one of a type of identifier for a record or item in the table. It is comparable…

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 are the most important differences between a data item and a data property from the point of…

A: Understanding the differences between data items and data characteristics is essential when dealing…

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: hen creating subtype associations, it is important to consider the database table possibilities…

A: Given When creating subtype associations, it is important to consider the database table…

Q: How to Doing "Update-Database" within your code in Entity Framework.

A: The databases used by non-development environment applications frequently need to be updated. After…

Q: Data Preparation Describe what you did with the data prior to the modelling process (data cleaning).…

A: Given:

Q: Create an ER model related to the following entities and relationships: Department, Student,…

A: The Diagram of the ER model is attached here with the answer. Please refer to step 2.

Q: see of representing relations as a graph or a matrix? What is one way that you might use either a…

A: A graph matrix is a square array that has one row and one column for each node in the graph. Node I…

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: relations are not physically sorted but both have an index on the attributes that are being merged,…

A: In this question we have to understand the term provided where when both relations are not…

Q: What are three signs that a surrogate key should be generated for the primary key of a relation…

A: A surrogate key is one that serves no practical or operational purpose. It's "artificial" and made…

Q: Consider relation R in the following E/R diagram. If E1 has 3 entities, E2 has 4 entities, and E3…

A: Given Data : Number of entities in E1 = 3. Number of entities in E2 = 4. Number of entities in E3 =…

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: A bridge/joint table is just what it sounds like. What should you do instead? What's wrong with the…

A: The answer is given below step.

Q: Should the cardinality between entities be translated/read from both ends of the notation when…

A: Cardinality: Cardinality refers to the maximum or lowest number of components that may be used on…

Q: ell which table architectures are good and which ones are terrible without testing them out. For…

A: Q. When it comes to table structures, why are some considered bad while others are deemed excellent…

Q: Explain data input field design. Is there a time to violate these rules

A: Data input field design is an important aspect of creating an effective user interface for any…

Q: When using subtype associations, it's vital to talk about the different database table alternatives.…

A: Introduction: When using subtype associations, it's vital to talk about the different database table…

Q: The conditions under which the database designer should employ supertype and subtype connections are…

A: There are a few conditions under which the database designer should employ supertype and subtype…

Q: Apply the ER-to-Relational Mapping Algorithm to get the relational model (database schema) from the…

A: For relationship between Dependent and employee is 1:N with the dependent being weak entity. So we…

Q: ✦ Converting schema model from ER model, an additional table is made in case of many to many…

A: ER diagram is converted into Relational model in which each entity is converted into a table and all…

Q: What are the key distinctions between overlapping and disjoint constraints, and how do you…

A: overlap and disjoint constraint apply to specialization/generalization relations in a database…

Q: Draw an ER-diagram for the following relational schemes. (Hint: bed and wardrobe are both…

A: The Entity-Relationship (E-R) diagram for the given relational schemas is as follows,

Q: It is known that we should avoid redundant data. Let’s say you have a Product Table with the cost of…

A: Database Design:- As the user’s requirements change,so developers need to change DBMS from time to…

Q: Describe how the multivalued attribute of an E-R diagram is transformed into relations

A: Multivalued attributes are represented by double ovals in an ER diagram.

Q: The conditions under which the database designer should employ supertype and subtype connections are…

A: The answer for above question is given in the below step

Q: Develop a variation of the hybrid merge-join approach where none of the relationships is physically…

A: Introduction: The merge join is not the same as the hybrid merge join. In the merge join technique,…

Q: A Dbms comparison between Entity Type and Entity Instance would be good.

A: In a database management system (DBMS), the concepts of entity type and entity instance are…

Q: The conditions under which the database designer should employ supertype and subtype connections are…

A: Definition: A kind of generic entity that is connected to one or more sub-types is known as a…

Q: It is essential to discuss the various database table possibilities when dealing with subtype…

A: A company's Contacts table may store supplier names, e-mails, and phone numbers. Because other…

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.