Staff_code CountryCode Staff_name COUNTRY STAFF belongs Degree Country_name Specialization Continent JoinYears Date_of_joining DESC CODE

Q: A company makes items. Each item has a name, ID and component quantity. Every item contains many…

A: Solution:   Given, A company with several departments. Each department is identified by a name, ID,…

Q: Question: Draw a diagram showing the relationships for all the tables. The following tables need to…

A:

Q: A primary key of another entity as an attribute of an entity creates: A Parent-Child connection…

A: A primary key is unique key which can't be null. There can be only one primary key in one table.…

Q: Modify the Er diagram given below and add 5 to 6 more additions to it such as entities attributes…

A: RE DIAGRAM for college management system

Q: Explain entity sets.

A: Entity sets are a fundamental concept in the field of entity-relationship modeling, which is used to…

Q: List all of the many properties that the Entity-Relationship (ER) model has.

A: 1. Describe the different kinds of characteristics in the Entity-Relationship (ER) model. Solution:…

Q: Use the ER Diagram shown on Figure 2 to anewer questions 6 and 7: 6. According to the ER diagram on…

A: Given ER diagram contains, Student and College entities Attributes of Student entity are StudID,…

Q: ith an example.

A: Key Attribute A key is a data item that is used to identify a record in a database or a value that…

Q: Give an example of how attributes are used in a relationship model, and what the generic term for an…

A: Entities in the ER model contain characteristics that may be single-valued, multi-valued, composite,…

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, relationship, and attribute names and definitions should all be correct.

A: An entity relationship diagram (ERD) also known as an entity relationship model is a graphical…

Q: ER model relationships are represented using a.) relationship keys b.) primary keys c.) crows…

A: To find the solution for: ER model relationships are represented using  What do the cardinalities…

Q: What is the difference between single-valued attribute and multi-valued at attribute and how are…

A: An attribute can be described as the characteristic that an entity persists.

Q: Question Write your Answer 1 Simple Attributes (any 2)   2 Composite Attribute   3 Multivalued…

A: Ans1) country_name and staff_code are simple attributes because they have atomic values which cannot…

Q: please answer with proper explanation and step by step solution. Question: Briefly describe the…

A: Introduction Domain: In computer science and database theory, a domain refers to the set of all…

Q: What is the difference between single-valued attribute and multi-valued at attribute and how are…

A: An attribute can be described as the characteristic that an entity persists.

Q: Given the following ERD. ID name salary Instructor Grades teaches ID name salary Student 1) What is…

A: - We need to talk about the ERD diagram provided.

Q: When an entity has the primary key of another entity as an attribute, this creates: A Parent-Child…

A: The answer with an explanation is given in step 2.

Q: What are the key distinctions between a straightforward multivalued attribute and a repeating group?

A: A straightforward multivalued attribute is a type of attribute in a database that can have multiple…

Q: It is possible to have both a primary key and a candidate key for the same attribute.

A: Relational model of databases, a primary key is a specific choice of a minimal set of attributes…

Q: Which of the following might result from a many-to-many relationship? Group of answer choices…

A: A many-to-many relationship is a fundamental concept in database design and data modeling. It…

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

A: a:Multi valued attributes are those attributes which can take more than one value for a given entity…

Q: relationship between entities and attributes.

A: EMPLOYEE(EMP_NUM, EMP_LNAME, EMP_INITIAL, EMP-DOB) Here, primary key = EMP_NUM DEPENDENT(EMP_NUM,…

Q: What is the degree of relationship?Give an example of a relationship of degree three

A: DEGREE OF RELATIONSHIP -  The particular number of type of entities which participate into a given…

Q: Using the ERD diagram above, identify an attribute that might represent a Derived Attribute. Once…

A: In a database, the characteristics of the values are known as attributes. In a database, data are…

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.