Question Write your Answer 1 Simple Attributes (any 2)   2 Composite Attribute   3 Multivalued Attribute   4 Key Attributes (any 2)   5 Derived attribute   6 Relationship is  (1-to-1/ 1-to-many/many-to-many)   7 Participation of COUNTRY is (Optional/Mandatory)

Q: Incorrect Question 6 Properties of a Domain V Relationships V Unique values O Format O Data type V…

A: According to the information given:- we have to the choose the correct option to satisfy the mention…

Q: Explain why an index is only effective when an attribute's values cover a suitable range of values.…

A: using a variable index with an extensive range of values An index in computing is a table or other…

Q: Translate this ER diagram into a relational schema, Choose appropriate data types for each attribute…

A: Relational Schema characterizes the design and structure of the relation like it comprises of the…

Q: How are attributes implemented?

A: Ans-:   Аttributes  аre  used  in  С#  tо  соnvey  deсlаrаtive  infоrmаtiоn  оr  metаdаtа  аbоut…

Q: Explain why an index is only useful if the values of an attribute are different enough.

A: Introduction Use of an index with a wide range of values A file index is a table or other data…

Q: Explain why an index is only useful if there is sufficient variation in the values of an attribute.

A: A term index is a data structure used in computer science to aid the quick lookup of words and…

Q: Q. A/ Consider a STUDENT relation with the following attributes (St ld, St Name, St_Stage, Average,…

A: In order to design the student table with with attributes St_id (which is the student id), St_Name…

Q: The cardinality ratio depends on the real-world meaning of the entity types involved and is defined…

A: Cardinality ratio in database design refers to the relationship between entities, indicating how…

Q: Explain why an index is only helpful if an attribute's values are sufficiently diverse.

A: Introduction Use of an index with a wide range of values A file index is a table or other data…

Q: Explain why an index is only useful if an attribute's values change enough.

A:

Q: What is the difference between an attribute with numerous values and a recurring group?

A: An attribute is fields that may be originate in a database management system (DBMS). Constituent of…

Q: Explain why an index is only useful if the values of an attribute are sufficiently varied.

A: Introduction: In computing, an index is a table or other data structure that is used to determine…

Q: 1. Total participation is where each entity participates in at least one relationship in the…

A: 1- True, Each entity in the entity set is involved in at least one relationship in a relationship…

Q: Explain why an index is only useful if the values of an attribute vary sufficiently.

A: Introduction: Use of an index with a range of values

Q: Explain why an index is only useful if there is sufficient variation in the values of an attribute.

A: Given: Utilization of an index that covers a broad range of values A table or other data structure…

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: What is the relationship between the main key and a non-key attribute, based on the information…

A: Given: The term "functional dependence" refers to the relationship between two features. A…

Q: Based on the information provided, indicate for each of the following sets of attributes whether it…

A: Here, I have to provide an answer to the above question.

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: A candidate key is a characteristic possessed by a composite primary key. What is your response to…

A: The statement you provided is not accurate. A candidate key and a composite primary key are…

Q: What is attribute flow?

A: Here we will discuss about attributes attribute flow

Q: A prospective key is an attribute that is part of a composite primary key.

A: One primary key is a composite one.   The primary key in database management systems consists of two…

Q: Suppose an attribute that is part of a main key is also a candidate key. How would you respond to…

A: Required:  What response should you provide if someone suggests that an attribute which is a…

Q: Does the choice of composite characteristics affect when deciding whether composite keys are…

A: The choice of composite characteristics can indeed influence the decision of whether composite keys…

Q: In a composite primary key, a prospective key is a prospective characteristic

A: One primary key is a composite one.The primary key in database management systems consists of two or…

Q: What is the distinction between a repeated group and a straightforward multivalued attribute?

A: An attribute is a property of a table that contains a set of certain values in multiple rows that…

Q: Can a composite attribute be part of a composite key

A: Composite attribute as a composite key Composite attribute is a attribute that contains more than…

Q: Explain why an index is only useful if the values of an attribute span an appropriate range of…

A: Use of an index with a range of values An index is a table or other data structure that is used to…

Q: When an attribute is part of a composite primary key, it's also a candidate key.

A: A candidate key is a field or expression that satisfies the requirements for a primary key. It is a…

Q: Translate the following ER Diagram into relational model. Show different relations that will result…

A: Relational Model is used for modelling data in the form of relations or tables. It represents how…

Q: According to another non-key attribute, what is the connection between the primary key and a non-key…

A: The term "functional dependence" refers to the relationship between two features. A relationship,…

Q: Please decribe briefley explanation in simple words.   Describe how the multiple attribute…

A: Multiple Attribute Selection Process is a method used to choose the most relevant and significant…

Q: A composite primary key has a candidate key for one of its attributes. How would you react to this…

A: Definition: A key is a property or group of properties that allows us to identify a tuple in a…

Q: Explain New descriptive attributes?

A: Lets see the solution.

Q: Assume that an attribute comprising a primary key is also a candidate key. What would be your…

A: Assume that an attribute comprising a primary key is also a candidate key. What would be your…

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.