3: Mapping the ER diagram into a relational model.

Q: Transform it into Relational data model, and transform it into normalized form؟

A: A Relational Data Model is where data is stored in form of tables and each is related to the other…

Q: 4) How many instructors are advising more than three students? 5) Which department has the highest…

A: Here, we have to fetch result based on id present in advisors table   select i.* from instructors i…

Q: Based on this ER diagram, write a complete relational schema.

A: Here the relationship between professor and office is one to one. Thus we can include primary key of…

Q: Using the SQL programming language, how would one go about changing the structure of an existing…

A: ALTER table command The structure of a table can be changed using the ALTER TABLE command.  It can…

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: branch(branchsname, branch&city-assets}' customer (HD, tustomer name, customer street, customer…

A: Hey, since multiple sub-parts question posted, we will answer first three sub-part questions…

Q: How should data about customer contact details and data about their orders be stored in a database?…

A: Here customer is an entity since it has its own attribute.  Now order can be considered as one more…

Q: The attribute on which a relation is partitioned can have a significant impacton the cost of a…

A: In parallel systems, the data is partitioned over many disks. The partitioning is performed on the…

Q: Write the following queries in SQL on the relational database schema for COMPANY database given in…

A: Solution: Given: Given  the relational database schema for the COMPANY database   To Find:   Find…

Q: What is the generic term for an attribute and how is it used in a relational model, if applicable?

A: Given: Each type of relationship can have its own set of relationship attributes. Attributes are…

Q: How do we decide which model to construct while using Microsoft Access to generate our tables?

A: Intro Microsoft Access: A database management system is Microsoft Access. A relational database…

Q: The partitioning of a relation based on an attribute can have a considerable impact on the query…

A: Structural Query Language (SQL) refers to a database language. It is possible to work with tables…

Q: Describe M: N ternary relationship in a relational data model.

A: To be determine: Describe M: N ternary relationship in a relational data model.

Q: Question#1: Draw query tree for following relational queries. Also write SQL query for each…

A: Note: Since you have posted multiple sub-questions in the same request, we will solve the first…

Q: ver All the questions: Consider the below Student table and write the appropriate relational algebra…

A: Here we need to use selection operator to select only those tuple whose city is not equal to muscat.…

Q: 1- Draw an ERD about a restaurant on Oracle SQL developer data modeler, it should contain at least 8…

A: Answer: I have given answered in the handwritten format in brief explanation.

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

A:

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: h query in this relational database (represented by relational diagram) will provide you with the…

A: Query for list of 3 transported products by shipper DHL in January 2020

Q: Convert the Entity Relationship Diagram in to QI. relational database by using MS Access (Note:…

A: maintain the oder of creating table CUSTOMER TABLE CREATE TABLE CUSTOMER( CUSTOMER_ID NUMBER(5),…

Q: Which one is correct When transform the following ER diagram into a relational schema name manager…

A: employee is the relation and the remaining will be the attributes and relationship

Q: Can you help for a sql and a code that shows the records such as firstname, lastname, middlename,…

A: i give this solution in step 2 first of all create database in mysql and connect after run this code…

Q: Give four reasons to create an instance of your relational schema with sample data?

A: Given: Give four reasons to create an instance of your relational schema with sample data?

Q: Find the last name of the supervisors who do not have dependents.

A: SELECT LNAMEFROM EMPLOYEEWHERE NOT EXISTS (SELECT *FROM DEPENDENTWHERE SSN = ESSN);

Q: query in relational algebra to find the ID and the brand of those trucks whose type is S.

A: It is procedural query language. It collects instance of relation as input and fives occurrences of…

Q: QUESTION 4 Answer All the questions: Consider the below Student table and write the appropriate…

A: Given : Here, we have given the Student table with the list of columns. We need to write the…

Q: name, street, city) ii. account (account number, customer id, branch id,  balance) iii.…

A: Structured Query Language abbreviated as SQL is a query language. It is widely used language in…

Q: How does one properly model a many-to-many with history? What are foreign keys used for? What…

A: Foreign keys put the “relational” in “relational database” A foreign key is a column or combination…

Q: Does the relational model, as seen by an SQL query writer, provide physical and logical data…

A:

Q: Your task for this week is to create SQL query to develop a table for MEDIA schema also add all the…

A: Introduction: The Question is based on creating the table named MEDIA and the table contain the…

Q: What are primary, foreign, external, surrogate, and substitute keys?

A: The solution for the given question is What are primary, foreign, external, surrogate, and…

Q: of a relational data

A: Ans 1  Event with date - Select * from customer where event_date between 'yyyy--mm--dd' and…

Q: The relational database schemas are as follows: department(dept-name, building, budget)…

A: create table department(                  Dept_name varchar primary key,                  Building…

Q: Write an SQL statement to list ItemNumber and ItemDescription for all items that cost more that $100…

A: Below is the query:

Q: Explain why the join operation in relational algebra can be an enormous drain on the database…

A: NOTE  :-  Below i explain the answer in my own words by which you understand it well.   Join is a…

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: Use relational algebra (operation like selection, procejection, etc.) to find names, age, rating of…

A: Relational algebra is also known relational query language Query languages: It allows manipulation…

Q: Question 2. Using MySQL workbench implement the conceptual model of ABC online bookshop and submit…

A: Solution

Q: How many foreign keys in the relational schema mapped from the Central School Library ER diagram…

A: ER diagram: An entity relationship diagram can be used to visually represent the structural…

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

A:

Q: Your task is to convert a given relational model into a dimensional model.  Explain how you will…

A: The process to convert given relational model into dimensional model and the identification  of…

Q: Exercise 3.13 Consider the university database from Exercise 2.3 and the ER dia- gram you designed.…

A:

Q: Find the minimum mumber of tables required to represent the given ER diagram in relational model-…

A: Rules for converting ER diagram to tables in relational model are: A strong entity set with only…

Q: Given the ER diagram below, write SQL statements to create the corresponding relations and capture…

A: Please give positive ratings for my efforts. Thanks.   SUMMARY Provided the Create statements to…

Q: An employee may have earned many degrees, and each degree may have been earned by many employees.”…

A:

Q: Transform the above ER diagram into Relational Schemas

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

Q: How do you represent a 1:M unary relationship in a relational data model?

A: Unary relationship: The unary relationship is the relationship where both its participants in the…