Database Map the Hotel ER diagram into relations. The outcome schema should have: - Relations - Primary Key/ Foreign Key connections

Q: An entity student has a derived attribute "age". When mapping ER Diagram to schema, you place…

A: We have an entity 'student' has a derived attribute "age". When mapping ER Diagram to schema, where…

Q: There are several attribute relationships, including partial dependency and transitive, give an…

A: 1.about partial dependency and transitive, 2.The normalization stage in database design, especially…

Q: Apply the ER-to-Relational Mapping Algorithm to get the relational model (database schema) from the…

A: For relationship between Dependent and employee is 1:N with the dependent being weak entity. So we…

Q: Mapping: Create relational schemas for the ER diagram given below. Indicate clearly the primary and…

A: The relational schema has been given in step 2.

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: Database Systems Draw ER Diagram for school management system of following figure with proper…

A:

Q: For a relation named X with attributes (A. B, C, D, E, E), where the primary key of X = { A, C, F },…

A: 4NF data base i given below

Q: Consider the relation r(A, B, C) with the attribute A as the index. Give an example of a query that…

A: GIVEN: Consider the relation r(A, B, C) with the attribute A as the index. Give an example of a…

Q: Consider the relation r(A, B, C) with the attribute A as the index. Give an example of a query that…

A: Given that: Consider the relation r(A, B, C) with the attribute A as the index. Give an example of a…

Q: Consider the relation r(A, B, C) with the attribute A as the index. Give an example of a query that…

A: Given: Consider the relation r(A, B, C) with the attribute A as the index. Give an example of a…

Q: Consider the relation r(A, B, C) with the attribute A as the index. Give an example of a query that…

A: Answer is given below .

Q: Conversion of E-R diagram to relational schemaSchema is a correct translation of the E-R diagram…

A: E-R diagram The entity-Relationship diagram depicts the relations between the tables in…

Q: Consider a relation with schema R(A,B,C,D,E,F,G). Choose the key for the relation for the following…

A: Given set of Functional Dependency :  A --> B B --> C C --> D D --> E E --> F F…

Q: Give examples of relations (tables) that could have more than one candidate key.

A: You are asking the example of relation that can have more than one candidate key. Let me explain-…

Q: Consider the E-R diagram for a university database as shown in Figure 1. Detect the weak entity…

A: Explanation: Weak entity is an entity that is depend on strong entity to ensure the existence of…

Q: Give some instances of relations (tables) that may have more than one candidate key in their…

A: Candidate Key is a field or a column in a table or a relation which is used in uniquely identifying…

Q: Give some instances of relations (tables) that may have more than one candidate key in their…

A: A set of attributes that individually identify rows in a table is known as the candidate key.

Q: Give some instances of relations (tables) that may have more than one candidate key in their…

A: Suppose we have relation between Driver and Car where driver will ride only car and a car will be…

Q: Give some instances of relations (tables) that may have more than one candidate key in their…

A: There can be only one primary key and more than 1 candidate keys.   Alternate keys are candidate…

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: Translate your ER diagram into a relational schema in the form of SQL DDLs. Choose appropriatedata…

A: The schema represents the layout of the database. For instance, suppose there are three to four…

Q: I am working on creating a logical entity relationship diagram for my database class. I am wondering…

A: INTRODUCTION: Although the full problem description is not given so deducing the problem /…

Q: How relation listening important?

A: The relationship that is built between people when they communicate is the focus of relational…

Q: Given the ER diagram below, create relation schemas to capture the database design.

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

Q: Conversion of E-R diagram to relational schema: schema is a correct translation of the E-R submitted…

A: Introduction of E-R diagram: The entity-Relationship diagram depicts the relations between the…

Q: In SQL, foreign key constraints can reference only the primary key attributes ofthe referenced…

A: For many-to-many instance, the relationship should be represented as the distinct/separate relation…

Q: What is the minimum total number of tuples across all relations that can be entered in the database…

A: Answer One Library book has at least 2 copies. one Library book can be written by one or many…

Q: Transform the above ER diagram into Relational Schemas

A: The given is an Entity Relationship (ER) diagram that shows:   Entities, attributes and…

Q: The use of composite attributes are avoided in relation schema when the relation schema conforms to…

A: The use of composite attributes, are avoided in a relation schema when it is said to be in First…

Q: A subtype/supertype relationships are especially important in Enhanced Entity Relationship…

A: A supertype is a generic entity type that has a relationship with one or more subtypes. A subtype is…

Q: When it comes to relationships, what is the connection between the main key of a relation and the…

A: The connection between the main key of a relation and the functional dependencies among all…

Q: What is the connection between a relation's primary key and the functional relationships between all…

A: Introduction: Relational database theory is built on the foundation of primary and foreign keys.…

Q: Consider the E-R diagram for a university database as shown in Figure 1. What is true about grade?…

A: “grade” represents an entity associated with the relationship “takes” in the given…

Q: Transform the following Entity Relationship Model into Relational Schema. DeptiD EmpiD DName Name…

A: The term "schema" refers to the organization of data as a blueprint of how the database is…

Q: Explain the usage of attributes and the generic name for attribute in the relationship mode

A: I have provided answer in step2

Q: In the refational model, the database snapshot is also called Select one a KUrent set of entity…

A: The current set of entities is also called a database snapshot.

Q: A list of normalized relations (using the notation from class) that is based on your ER diagram.Be…

A: Please give positive ratings for my efforts. Thanks.   ANSWER   Alright, so we will consider Paying…

Q: 48. Collection of tables to represent both data and relationship is described by _____________. a.…

A: Given that, 48. Collection of tables to represent both data and relationship is described by…

Q: 48. Collection of tables to represent both data and relationship is described by _____________. a.…

A: Question 48. Collection of tables to represent both data and relationship is described by…

Q: Convert the following ERD to relation schemas. EXPLAIN your answer. Dept Course number Name Name Id…

A: The Answer is

Q: What is The Compressed form of Entity Relationship Diagram in Database?

A: This question wants compressed form of a term in database.

Q: Transform the ER model below into a set of 3NF relations. Use the format shown here for relations:…

A: A database is a collection of related data which represents some aspect of the real world. A…

Q: Consider the E-R diagram for a university database as shown in Figure 1. What does deparment…

A: Entity In the Entity-Relationship diagram, department represents entity. An entity is an object in…

Q: Consider the following relation for published books: BOOK (Book title, Author_name, Book type, List…

A: Consider the following relation for published books: BOOK (Book title, Author_name, Book type, List…

Q: Consider the following relation for published books: BOOK (Book title, Author_name, Book type, List…

A: Consider the following relation for published books: BOOK (Book title, Author_name, Book type, List…

Q: Which of the following statements corresponds to the second normal form for an entity - relationship…

A: A relationship must have a key,with simphleks domains for its attributes and all non-key attributes…

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: Consider the foreign key constraint from the dept_name attribute of instructor to the department…

A: Violation of foreign key constraint: The foreign key of one table violates when the primary key that…

Q: Write a relational calculus based on the following relations: Professor (ProfID, ProfName, DeptNo)…

A: department (deptId, name, hod, phone) professor (empId, name, sex, startYear, deptNo, phone) course…

Q: Databases: Give six important properties of relations.

A: The six important properties of relations are as follows:   Values are atomic. Column values are of…