What exactly is a derived attribute? Please provide an example. What are the benefits and drawbacks of keeping or not storing a derived attribute

Q: Which the following question,Subject_Code is a(n) __________ and Subject is a(n) __________?…

A: To find the correct option for the Subject_Code and Subject. Database: It is a collection of…

Q: Question: Draw a diagram showing the relationships for all the tables. The following tables need to…

A:

Q: Description: consider the following relations for a university: Student (sid: integer, sname:…

A: Answer: Given some data for a university and we have to write SQL command  to create relation

Q: List, in alphabetical order, the names of all patients who had consultations after 01 January 2018.…

A: 6.2   Select pt.Pat_Name ,cs.Con_Date FROM patient pt JOIN Consultation cs ON pt.pat_id=cs.pat_id…

Q: Determine for each update anomaly whether or not the relation Abnormal_Rel is susceptible to that…

A: - The question want to examine the succeptibility capacity of the provided relation.

Q: A)Which of the following are used to indicate cardinality symbols? a.WITH b.P c.None of the…

A: A) Cardinality symbols:  Cardinality of a relationship defines the number of instances which can be…

Q: that contains 4 entities in 3NF to create a Crow's Foot ERD (use the name of entities and attributes…

A: The given is a database description with entities , attributes, and relationships between the…

Q: Can you give an example of an entity in the MiniMarket Warehouse Warehouse Database, please input in…

A: A data warehousing is an electronic method of organizing,analyzing and reporting information.In…

Q: Modify the MODEL table to add the attribute shown in the following table. MOD_WAIT_CHG should…

A: The given problem is related to database table modification i.e. DDL language. The requirement is to…

Q: indicate the changes(using the shorthand representation)that you would need to make to the original…

A: ITEM_ID which is unique and primary key in ITEM table can act as a identifier for ITEM. Using…

Q: Map entities, attributes and relations in Oracle is represented by___________ a) Conceptual Schema…

A:

Q: Which quality of the table demonstrates why it is not in first normal form? A: There are only…

A: Here, we have to explain why the table is not in first normal form.

Q: What exactly does "Attributes" imply?

A: Introduction: Whenever we are working with or programming computers, an attribute refers to a…

Q: Write the entities , attributes and relationship in this text .Make sure select the correct types of…

A: As per the scenario, the following is the Entities- Company Manufacturer Technicians Piano…

Q: Complete the following sentences with the appropriate word(s):     A(n) ____________________…

A: A(n) relational database stores data in a collection of related tables. Each column of a relational…

Q: 8. Data Manipulation Language enables users to: a. Retrieve information stored in database b. Insert…

A: As per the QNA policy, only first question is answered: i.e 8th   8. Data Manipulation Language…

Q: . Which one of the following attribute can be taken as a primary key ? a. Name b. Street c. Id d.…

A: The attributes name, street and department can repeat for some tuples. But the id attribute has to…

Q: An attribute can be atomic, composite, or multivalued True  False 

A: Solution : The answer is True

Q: It is known that we should avoid redundant data. Let’s say you have a Product Table with the cost of…

A: Database Design:- As the user’s requirements change,so developers need to change DBMS from time to…

Q: Q2- What is a composite entity, and when is it used?

A: Entity – Entities are actual world items that structure the essential locks around which the entire…

Q: Database course:  Convert the following ER diagram into a relational database schema, be certain to…

A: The relationship between Accident and Car is M:N. Thus we need to create a new table for the…

Q: Consider the following schema: Sailors(sid, sname, rating, age) Reserve(sid, bid, day) Boats(bid,…

A: ans is given in below

Q: A small surgery center needs your help to create a database. The office manager has identified the…

A: Primary Keys and Attributes: The primary keys will include, Doctor’s ID, Patients ID, and procedures…

Q: For 1 through 4, state whether the statements are True or False (Do not provide any explanation or…

A: This question is a simple true and false question in which we have to state either true or false and…

Q: Please identify the attributes and primary keys needed for each of the entities. Identify the data…

A: Given : A small surgery center needs your help to create a database. The office manager has…

Q: Consider the following normalized relations from a database in a large retail chain What…

A: Denormalisation is process related to the database. The primary requirement to do denormalisation is…

Q: Which normal form requires that, no non-key attribute should functionally depend on a part of the…

A: This question says about Regardless of the typical form, no non-key attribute should depend on any…

Q: Patient ( www er, firstName:varchar(20), Answer questions 2.1 to 2.4 based on the following schema.…

A: Solution:   2.1)   Creating Treatment table:   CREATE TABLE Treatment( doctorId integer PRIMARY KEY,…

Q: 1. I am unable to figure out about composite key. How to see if a schema requires a composite key or…

A: Note: This is a multiple-question-based problem. As per company guidelines, only the first question…

Q: tify appropriate data type to be used for all attributes and set primary key. stu_id Stu-name S SN…

A: Below are tables 1.Table Name :StudentSchema :Student(stu_id,stu_name,major,GPA)create table…

Q: dentify appropriate data type to be used for all attributes and set primary key. stu_id Stu-name S…

A: In the give ERD, the relationship between Student and Professor is one-to-one (1:1) For binary…

Q: Given the relation below named Student_Registration , answer the following questions. S_id…

A: Relational Schema: A relational schema in a database gives a outline of how data is organized in a…

Q: Please describe what is the purpose of the database. Your design

A: - The purpose of the database is to store and retrieve information about library materials.  The…

Q: an Entity and Attribute? Write different types of Entities and Attributes, along with their specific

A: The fundamental distinction between the entity associated attribute is that associate entity is an…

Q: What are Attributes ?

A: Attribute: Attribute refers to an entity property. It can also be referred to a database component…

Q: Differentiate between left outer join and right outer join with respect to their functionality and…

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

Q: 2):-When a table has no suitable _ key, the database designer speciiesa(n)__ a) primary, foreign…

A: The given questions are related to desingng the data base as logical model (ER model) as wella s…

Q: Question 11 Which one is NOT correct? LOTSIA Property id County_name Lot Area FD1 FD2 FD5 LOSTS1A is…

A:

Q: When designing this database, which step do you take first? a. Identify the customer ID and…

A: When designing this database, the first step will be creating a database using Create Database…

Q: Question 7 On ERD, you can create attributes with the same name in different Entities.   Question…

A: On ERD, you can create attributes with the same name in different Entities.

Q: Mr Lim owns a restaurant for which he has hired several chefs. He wishes to design a database to…

A: An ERD helps in understanding how relations should actually be developed in a database. Their…

Q: Which normal form requires that, no non-key attribute should functionally depend on a part of the…

A: Correct Answers : 1st, 2nd, 3rd Normal form

Q: table design by creating table

A: Given :- An Entity Relationship diagram (ER diagram) is mention in the above given question   Need…

Q: Create the Crow's Foot ERD corresponding to the schema above.

A: Entities are represented as a rectangle in crow's foot notation, with their name at the top. The…

Q: A. For each table, identify the primary key and the foreign key(s). If a table does not have a…

A: Hey there, I am authorised to answer 1st 3 part of the question at a time when there are multiple…

Q: 1. Explain why the data in the table is not in First Normal Form. 2. Explain why the data in the…

A: 1) Bookings table in not in 1NF: A database table is considered to be in 1NF if, a) It has a primary…