Suppose that in some database of people and their heights we count a person’s height as 1 unit of information. How much information is contained in the average of the heights of all the people in the database?

Q: Consider  the  following  example  database  and  query  and  then  show  the  value of…

A: distance(volvo,Volvo_Distance) Volvo_Distance = speed (volvo, Speed) * time (volvo, Time) = speed…

Q: a SQL query for the give CSV that have their own table List all airlines. For every airline,…

A: the query is an given below :

Q: IN SQL, POSTGRESQL. For customer, product and state, show the average sales before and after each…

A: The solution for the above given question is given below:

Q: Normalize the following unnormalized table using the three normalization rules and describe each…

A: Dear Student, The three normalization rules are nothing but the normal form conversion of the table,…

Q: Write an SQL query based on the described database for a student exchange program coordinator. To…

A: Introduction:- Below is the complete solution with explanation in detail. Below is the SQL query for…

Q: For this assignment you are assigned a task to develop a SOQL query to find name, id from the…

A: As per the above listed problem statement we are given a task to develop a SOQL query to find the…

Q: What exactly is denormalization?

A: Introduction  the question is about denormalization and here is the solution in the next step.

Q: Two students are registered for one course. Can both students get the last database seat?

A: Given: There are two college students that must sign up for the course. But, there is just one seat,…

Q: Write a single SQL query to show the number of persons which live in "Alabama" or "Maine". Use…

A: sql query to show number of persons which live in AL and ME

Q: Write an SQL query to fetch all the employees who either live in California or work under a manager…

A: The Query is given below with OUTPUT screenshot

Q: Consider the following customer records. Rescale the Age of the first customer using 0-1…

A: We need to normalise the age of first customer using 0-1 normalisation.

Q: Consider the relational database of Figure 3.19, where the primary keys areunderlined. Give an…

A: Creating the table – CREATE TABLE works(ID number, works_name text, salary number);   Inserting the…

Q: Correlations are distorted if the data is standardized. True False

A: The answer is given in next step

Q: Explain normalization and its different forms.

A: Normalization is a fundamental concept in the field of database management. It refers to the…

Q: A database includes information on people and clubs. Each person identified by an integer and has…

A: TABLE PEOPLE: The name of the table is Person. Its attributes are Person-ID Person_name Person_phno…

Q: A company makes four kinds of products. Each product has a size code, a weight code, and a shape…

A: To do: which code is primary key for the given table

Q: Consider the employee database of Figure 2.17. Give an expression in the relational algebra to…

A: Note: There are multiple questions are given in one question. According to the rule, you will get…

Q: How many orderings of A, B, C, D contain CB.

A: In this question, we have to order A, B, C and D and find out how many orders contains CB.

Q: Thus, persons are represented as pairs of integers: e = (birth, size), where the first number…

A: Describe how to expand the data structure of the skip list to respond effectively to the query: Max…

Q: 19. The following code refers to the sample data in the table people. What is the result of each…

A: Note: - As per the guidelines we can only answer one specific question at a time. Please resubmit…

Q: d Karachi 20,000 01 02 Sanaullah Peshawar 30,000 02 03 Imran

A: Consider you have the following 2 tables. Employee_Table Employee_ID Employee_Name Address Salary in…

Q: A database includes information on people and clubs. Each person is identified by an integer and…

A: To create a SQL statement for the table given in the problem statement. Statement: A database…

Q: Translate the following SQL query into MongoDB's query language: SELECT ChairName, Department FROM…

A: Assuming that we have a MongoDB collection named "Departments" with documents that have the…

Q: rizona  AZ          West    6392017   232 4              Arkansas  AR         S

A: Show summary of statistics by region using summary() and groupby() function.                   state…

Q: lajor Addre

A: Transform ERD into Relation.

Q: 15. List the first name for all contacts and whether they have a spouse or not (yes/no). Order by…

A: Structured Query Language : SQL ( Structured Query Language) is an area explicit language utilized…

Q: How does denormalization differ from normalization, and in what situations might denormalization be…

A: Two database design strategies that are used to maximize a database's performance and structure are…

Q: In this example, we will pretend that the student table in the university database is indexed by…

A: INTRODUCTION: A database is a collection of information that has been organized for easy access,…

Q: Write the suitable SQL statement to answer the following questions based on the following tables (…

A: Given question: Write the suitable SQL statement to answer the following questions based on the…

Q: Using a SQL query on the CSV that have their own contained table Find all reservations in room HBB…

A: * first we need to read csv files and import it to two tables * after reading csv file we need to…

Q: Corporation: id 15 17 20 Company: cid id 1 15 17 15 20 15 2 3 4 5 Assumptions: •id in Company…

A: Delete restrict means if there any specified row exists in the dependent table, then that relation…

Q: For the database of Figure 4.12, write a query to find the ID of each employee with no manager. Note…

A: Database: The database contains the collection of information organized in such a way that can be…

Q: You need to make use of an Oracle function in order to compute the number of days that have passed…

A: Assuming you have the date of your birthday stored in a variable birthday in the format YYYY-MM-DD,…

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…