Use relational algebra (operation like selection, procejection, etc.) to find names, age, rating of sailors who’ve reserved a green boat.

Q: StayWell also rents out properties on a weekly basis to students attending summer school in the…

A: In the given question we have to write the database schema for three cases using abbreviated…

Q: Display the list of students who are involved in the IT club Display the details of all the…

A: First get the studid from Club table and then get those Student details This can be done using inner…

Q: How do you represent an M:N ternary relationship in a relational data model?

A: Answer: Representation of M:N ternary relationship in a relational data model Ternary relationship:…

Q: Consider the following relational schemas: Formulate the Relational Algebra statements for the…

A: Note : As per guidelines of the company, we are authorized to answer 3 sub parts of a question when…

Q: After executing a Cartesian product of student and advisor, followed by a selection operation on the…

A: ALGEBRA OF RELATIONS: Relational algebra is essentially a query language that accepts as input…

Q: Write a relational mode for each of the case below. You can create our own attributes and provide…

A:

Q: Does it matter if you use composite keys or composite characteristics to see if you are able to use…

A: Composite keys and composite characteristics serve different purposes in database management…

Q: How do you represent an M: N ternary relationship in a relational data model?

A:

Q: 4. In a company, employees involved in many projects, and each project may have many employees…

A: Please refer below for your reference:

Q: What exactly do you mean by attribute interpolation?

A: While participating in a discussion between two other people, interpolation occurs when you…

Q: Explain with an appropriate example in the relational model.

A: Introduction: A relational model is a database that stores and makes available connected data…

Q: Given the database relation CUSTOMER (Customer ID, Name, Address, Customer- Status, Customer type).…

A: The primary key is a constraint represented during the creation of a table in the database. The…

Q: Write SQL query to fetch the Department of all employees with Name "Andrew" from table…

A: This query can be solved using the WHERE clause of SQL.

Q: Use the following relational schemas for answering the queries in relational algebra; STUDENT(ID,…

A: Query for the given conditions: SELECT ID , Phone FROM STUDENT WHERE name LIKE '%Kumar%' Here Its…

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: SQL allows relations with duplicates (Chapter 3), and the multiset version of the relational algebra…

A: Validation:   All the equivalence rules 1 through 7.b of the section 16.2.1 will hold for the…

Q: When you say "interpolation of attributes," what do you mean exactly?

A: In computer graphics, interpolation of attributes refers to the process of estimating intermediate…

Q: Write short notes on relational model and relational algebra?

A: Answer : Relational Model : The relational model (RM) for database management is an approach to…

Q: SELECT X.A FROM X,Y,Z WHERE X.A-Y.A OR X.A=Z.A Answer the next two questions (Questions 8 and 9)…

A: Given SQL query is, Select X.A From X,Y,Z Where X.A=Y.A Or X.A=Z.A Here X, Y, Z are the names of the…

Q: PLZ help with the following: Translate your ER diagram into a relational schema in the form of SQL…

A: E-R diagram is given with different attributes. From this we will create tables

Q: Create Relational Model of the given ERD. Highlight the mandatory foreign keys in your relational…

A: Objective: An entity-relationship diagram is given including several relations like Book, Publisher,…

Q: can you do with different operations names and attribute names and relations too?

A: Hi, the class diagram for the specified objects is given below.

Q: To be more specific, what do you mean when you say "interpolation of characteristics"?

A: Interpolation happens when you interject your perspective into a conversation between two other…

Q: What exactly do you mean when you say "simple" and "composite" attributes?

A: The entity-relationship (ER) paradigm is a means of conceptually designing databases. It is based on…

Q: Does it make a difference whether you use composite attributes or composite keys to determine if you…

A: Composite keys are useful when a table does not have a single attribute that can uniquely identify…

Q: Write about something that you learned in the relational data model that you feel is important.  Is…

A: Write about something that you learned in the relational data model that you feel is important.  Is…

Q: domain relational calculus;

A: Domain Relational calculus: It is a non procedural query language that describes a query but does…

Q: What do you meant by simple and composite attribute?

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

Q: The term "interpolation of attributes" is a little vague.

A: Start: Interpolation happens when you put your own point of view into a conversation between two…

Q: What exactly is meant by the term "transitive"? It is possible to convert tables that are in the…

A: Solution: We must first grasp prime and non prime properties before moving on to transitive…

Q: ou will need to create the database tables and choose sensible data types for each column. Make sure…

A: DBMS stands for Database Management System, which is a software system used for managing and…

Q: 5.6 LAB - Implement independent entity (Sakila) Implement a new independent entity phone in the…

A: First check whether phone_id column exists in your customer, staff, and store table or not. If…

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…