If you are reading a flat file, with minimal information regarding business rules and constraints. How can one determine the appropiate relationships between entities? This question refers to entity relationship modeling. Logical ERDs.

Q: What is an entity relationship model?

A: Please find the answer, detailed explanation and a sample ER diagram in the following steps.

Q: Can foreign keys be used with weak entities in an entity relationship diagram??

A: A entity that cannot be uniquely identified by its attribute alone is called weak entity.…

Q: by using crown's foot notation, draw an Entity-Relation Diagram for the entities CUSTOMER, PRODUCT…

A: ERD is a pictorial representation of entities and the relationship between them. An entity in a ERD…

Q: For each entity, there needs to be an indication of whether it is one-to-one, one-to-many or…

A: The answer is

Q: 2. Consider the ER diagram on the next slide. (i) What is the key of entity set A (ii) What is the…

A: When an attribute is emphasised in an ER diagram, it is said to be a key attribute.As a result, the…

Q: Q1 / answer the following: 1- The difference between relational data model and entity- relationship…

A: 1. In Relational data model , the relationship between entity is represented using table. While…

Q: QUESTION 1 Which of the following views is represented by the entity relationship diagram (ERD) as…

A: Question :-

Q: Draw an entity-relationship (E-R) diagram torepresent common business situations.

A:

Q: What is An entity-relationship model (e-r model)?

A: Given:-   What is An entity-relationship model (e-r model)?

Q: Consider the below ERD in Figure 03 of Student Enrolment system and answer the below questions.…

A: List the strong (non-weak) entity types in the ER diagram. Student Enrollment Lecturer Subjects…

Q: Please answer the questions based on the following Entity-Relationship diagram (5 points each): 1.…

A: Attribute• An entity type E (or a relationship type R) has attributesrepresenting the structural…

Q: Give an example of how the distinction between a candidate key and an entity type identifier is…

A: Entity Identifiers: Entity IDs are critical properties that are used to uniquely identify each…

Q: Based on the set of 3NF relations derived in (b), draw a complete entity relationship diagram (ERD)…

A: Employee Record ( Name, Emp Number, Address, DOB) Course Attended ( Number, Description, Location,…

Q: If you have an entity with 100 different attributes, what would be some strategies to model this…

A: Entity relationship model: It is an ER model. It is a graphical approach for database design. It is…

Q: 17.How are nary relationships associated with entity types? 1:They are different entity types.…

A: Step 1; The answer is given in the below step Introduction: Kinship is a substantial part of any…

Q: Can weak entities have foreign keys in entity relationship diagram

A: The, answer has given below:

Q: enhanced entity relationship diagram using the diagram below

A: ERD stands for Entity Relationship Diagram. These types of diagrams are also known as ER diagrams…

Q: Based on the given ERD, identify all the business rules and explain them. Also, identify all primary…

A: Primary Keys are the unique keys to recognize uniquely rows in a table. And foreign keys are used…

Q: What are the 6 BUSINESS RULES IN ENTITY RELATIONSHIP DIAGRAM? and give 5 example each business…

A: The Business rules in Entity Relationship Diagram are: Start with a single instance of each entity.…

Q: Given the ER diagram to the right, which entity types deserve to stay entity types and which ones…

A: Given the ER diagram to the right, which entity types deserve to stay entity types and which ones…

Q: Write down the many kinds of attributes in the Entity-Relationship (ER) model.

A: Given: 1. Make a list of the different kinds of characteristics that are used in the…

Q: Entity type ;Entity Instance

A: Entity type ;Entity Instance Entity type refers to collection of entity containing only common…

Q: According to the data model, is it required that every entity instance in the PRODUCT table be…

A: Database Management System(DBMS) is a software for storing and retrieving users data while…

Q: Establish the objective of an entity-relationship model and explain how it is constructed

A: Introduction: ER models explain how objects in a particular field of knowledge are interconnected.…

Q: What is the attribute that could be obtained using other attributes in the Entity-Relationship…

A: Introduction: What is the attribute that could be obtained using other attributes in the…

Q: What two criteria must an entity meet in order to be categorized as a weak entity? Give an example…

A: The Answer

Q: Concisely define each of the following keydata-modeling terms: conceptual data…

A: Note: There are multiple questions are given in one question. According to the rule, you will get…

Q: What two conditions must be met before an entity can be classified as a weak entity?Give an example…

A: Lets see the solution.

Q: Using the use case diagram draw a Rich Picture and  Entity Relationship Diagram.

A: Solution: An Entity-Relationship (ER) Diagram is a form of flowchart that shows how "entities"…

Q: Many to many relationships (a non spcific relationship) are resolved into a pair of one-to-many…

A: Many to many relationships (a non spcific relationship) are resolved into a pair of one-to-many…

Q: can you help me with this relationship entity  the entity are : warehouse, staff, incominggoods,…

A: Below i have made table:

Q: 1. List down the types of attributes in the Entity-Relationship (ER) model.

A: Given: 1. List down the types of attributes in the Entity-Relationship (ER) model.

Q: give a background for the Entity Relationship theory and the Guidelines for refining an Entity…

A: The question has been answered in step2

Q: In an entity-relationship diagram, what does cardinality mean? 1:The data is saved concerning a…

A: Foundation This question was taken from the Database Management System paper that was given in the…

Q: Explain the relationship in the below Entity Relationship Diagram (ERD) in your own words.

A: Below is the explanation of ER diagram:

Q: You must analyze the entities identified including the bridges: • Entity name • Entity description…

A: entity name:class level description:the class level entity acts as a base class for the classes…

Q: Describe the purpose and operation of an entity-relationship model.

A: Models of entity relationships are based on the relationships between entities in the actual world.…

Q: What are the two requirements that an entity must meet in order to be classified as a weak entity?…

A: Here are The Two requirements that an entity must meet in order to be classified as a weak entity…

Q: Applying your knowledge in Enhanced Entity Relationship modeling, Develop an EER model for the…

A: Answer: We will draw our EER model for the given situation, using the traditional EER notation or…

Q: Give a Relational Model that corresponds to the Entity-Relationship Diagram given below: address M…

A:

Q: Concisely define each of the following key terms: business rule, term, fact, entityrelationship…

A: Note: There are multiple questions are given in one question. According to the rule, you will get…

Q: Is there a need for creating an associative entity? If so, draw one, if not, then suggest

A: An associative entity could be a term utilized in social and entity–relationship hypothesis. A…

Q: b. Consider the below Enhanced Entity relationship diagram and answer the following questions.…

A: In this question, from the given enhanced entity relationship diagram, we are going to identify…

Q: Use ER Assistant to draw your diagram.  Transform the following M-N relationship into an associative…

A: ERD: ERD stands for Entity Relationship Diagram. This is a diagram which is used to show the…

Q: a. Identify all entities and attributes for each entity from the Sales Form in Figure 1. Provide…

A: The given problem is related to database where a form of sale is given and the requirement is to…

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