The "Annual_Sal" attribute in the "BOOK" Entity type is considered as:

Q: Please written by computer source The following relation is an extract from a restaurant…

A: Introduction : This question involves analyzing a relation from a restaurant point-of-sale (POS)…

Q: Why do the functional dependencies among a relation's attributes have to do with the primary key of…

A: Dear Student, The detailed answer to your question is given below -

Q: def distance_between_entities(entity1, entity2): """ compute the haversine distance between the two…

A: import numpy as np def distance_between_entities(entity1, entity2):    lat1 = entity1[3]    lon1 =…

Q: For merging two relations that are not physically sorted but share an index on the attributes in…

A: Your answer is given below.

Q: What does it mean to be related? How do you define a relation's properties?

A: Relation is a property of set that we study in discrete math. Two set be said as related when it…

Q: Booking Booking ID Passenger ID Flight_ID Booking Date 2. In the above entity, what attribute(s)…

A: Relational Database Management System (RDBMS):A Relational Database Management System (RDBMS) is a…

Q: Which one of the following statement is not true: A complex object is formed by combining other…

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

Q: J. K. Does this relation contain a transitive dependency? If so, what is it? Redesign the relation…

A: SOLUTION -From the given table we have given a table PROJECT with ProductId, EmployeeName,…

Q: Consider the relational schemas given below and the respective sets of functional dependencies valid…

A: Summary A functional dependency is a relationship that exists between two attributes. It usually…

Q: Describe three situations in which a substitute key for the main key of a relation should be…

A: Given: Indicators that point to the existence of a surrogate keyThere are three circumstances that…

Q: a) What is the minimum number of entries in Undergrad entity set? b) What is the maximum number of…

A: Part (1) The student entity is related to two other entities of the database which are Enrolls and…

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: Task 4: As a part of marketing strategy, the Marketing team continuously conducting an advertising…

A: Actually, database is a used to stores the data.

Q: Write a SQL statement that will change the value of the Task description with ID 3 to “Add logo to…

A: We will use an update query to modify the required string.

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.