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: 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: In the Entity-Relationship (ER) model, list the many types of attributes.

A: What is an ER Model? Theoretically and conceptually, software development uses entity-relationship…

Q: B3. How many attributes and tuples are there in the Cartesian product of the above two relations?…

A: According to the information given we have to define the number of attributes and number of tuples.

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: Describe the difference between simple attributes and composite attributes. Justify the need for…

A: INTRODUCTION: Here we need to tell the difference between simple attributes and composite attributes…

Q: What are the implications of choosing a composite primary key versus a single attribute primary key?

A: When designing a database, the selection of a primary key is a critical decision that can impact…

Q: Explain why an index is only helpful if an attribute's values cover a suitable range. This is the…

A: The above question is answered in step 2 :-

Q: What do business rules NOT help define within a data model? a.) Attributes b.)…

A: Data-driven business rules are constraints on specific data values. These constraints must be true…

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: What is attribute flow?

A: Here we will discuss about attributes attribute flow

Q: 'What's an unnormalized relationship? Is it a relationship according to the term relation…

A: Unnormalized relationship

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: Explain Single-vAlued verSuS MultivAlued AttriButeS?

A: An attribute is considered single-valued if there is at most one value associated with it at any one…

Q: Write down the all views of 4+1 View Model with the purpose, stakeholders and way of representation…

A: all views of 4+1 View Model The Logical Architecture:The Object-Oriented DecompositionObject…

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: Does the ability to include composite characteristics in composite keys depend on the composite…

A: Indeed, the composite attributes are necessary for the ability to include composite qualities in…

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: How do composite attributes differ from simple attributes in data modeling?

A: Data modeling is the process of creating a visual representation or conceptual framework of how data…

Q: Complete Each Entity's relationship. ex) A CUSTOMER makes  many ORDER And if ther is any errors or…

A: The following relations exists in the given Entity Relation Diagram: A CUSTOMER makes many ORDER. A…

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: 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: 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: Explain New descriptive attributes?

A: Lets see the solution.

Q: Discuss each of the following concepts in the context of the relational data model: (a) relation (b)…

A: Relational Data Model The logical data structures—the data tables, views, and indexes—are different…

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 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: 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: Staff_code CountryCode Staff_name COUNTRY STAFF belongs Degree Country_name Specialization Continent…

A: Sl.no Question Answer 1 Simple Attribute CountryCode, StafCode, StaffName, Specialization,…

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

A: Explanation:- Primary Key: t-name, p-name and id NOT NULL: id  t-name, and p-name

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 do you meant by simple and composite attribute?

A: GIVEN:     What do you meant by simple and composite attribute?

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 entity STUDENT and attributes: ST_INTIAL, ST_LNAME, ST_FNAME, ST_EMAIL, ST_PHONE .    Use…

A: Entity:- Student Attributes:- ST_INTIAL, ST_LNAME, ST_FNAME, ST_EMAIL, ST_PHONE

Q: The many-to-many relationship between entities is not supported by which data model? Please explain…

A: A direct many-to-many link cannot be enforced between two tables in relational databases since it is…

Q: Explain why an index is only helpful if an attribute's values fall within a reasonable range. An…

A: Introduction: The application of an index with a broad range of values: An index in computing is a…

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.