Create two different “Views” using below relations, then Alter one of the Views and Drop the other one.  After that discuss why Views are used by giving examples using relations from the tables below.   Student Relation Student_ID Student_Name Dept_Name 0000 AAAAA Computer Science 1111 BBBBB Computer Science 2222 CCCCC Business Administration 3333 DDDDD Education 4444 EEEEE Physics 5555 FFFFF History   Student_Courses Relation Student_ID Course_ID Section  Year Grade 0000 CS 2203 2 2020 A 0000 CS 1101 1 2019 A 1111 CS 1101 5 2019 B 1111 CS 1102 1 2019 B 1111 CS 2204 1 2020 A 1111 CS 2401 1 2020 A 2222 BUS 1101 3 2019 C 2222 BUS 2201 1 2020 B 2222 BUS 3302 1 2020 B 3333 EDUC 5010 1  2019 A 3333 EDUC 5210 1  2020 B 4444 PHY 1101 4  2019 A 4444 PHY 2202 1  2020 C 4444 PHY 3304 1  2020 A

Q: Open the totalfees query in Design view. Modify the query by creating a calculated field that sums…

A: Open the totalfees query in Design view. Modify the query by creating a calculated field that sums…

Q: EmployeeID is the primary key for the relation below. Which column violates a rule (characteristic)…

A: When creating column names for tables in a relational database, it's important to follow certain…

Q: Create the following table: Table Name: SUPPLIERS…

A: Given: Create the following table: Table Name: SUPPLIERS           FIELD NAME     DATA TYPE…

Q: Consider the following PRODUCT table (Primary key underlined). True or False: The two last rows are…

A: Dear Student, Only the primary key column must contain  unique items, other column can contain same…

Q: Create entity named schedule with attributes schedule_code as characters with size 15, course_code…

A: Query to create the table is:   Create table Schedule ( schedule_code varchar(15), course_code…

Q: lter table product so that column productlype is an integer instead of a varchar, not null should be…

A: Lets see the solution.

Q: A relation may not have a super key. (a) True (b)False

A: A super key is a set of one or more attributes (columns) within a relational database table…

Q: Parking_Number Car_Model Course Marketing lent_ID 2 Toyota 4 BMW Business IT Оpel Ford Hyundai…

A: Given that using the join statement select records that matching in both tables limited to…

Q: your submission will be the query that you would write that would return the needed result How many…

A: Below is the complete solution with explanation in detail for the given question about queries based…

Q: The Car Maintenance team also wants to store the actual maintenance operations in the database. The…

A: DELETE CASCADE: - When we constitute a foreign key using this option, it deletes the referencing…

Q: Q1. Create these two relations, then insert the tuples. (Instructor relation: ID is PK, dept_name is…

A: Answer

Q: 9. Create a new table lab_instructor which has the ID, name, lab_incharge and experience attributes.…

A: -- QUERY TO CREATE TABLE : CREATE TABLE lab_instructor( ID int primary key, name varchar(50),…

Q: A relation may not have a super key. (a)True (b)False

A: A super key is a set of one or more attributes (columns) within a relational database table…

Q: What conditions allow a relation's attribute to have a changeable length?

A: According to the question, we have to answer that what conditions allow a relation's attribute to…

Q: using sql develpper or sql live oralce Create the DONORS table with the following columns:…

A: As per our company guidelines we are supposed to answer ?️only first 3️⃣ sub-parts. Kindly repost…

Q: Write a SQL statement to create a foreign key in table Invoice_Detail that refers to the…

A: Write a SQL statement to create a foreign key in table Invoice_Detail that refers to the…

Q: write mysql statement to create database name aurther2.and do the following -create table name…

A: Please refer to the following steps below for the solution to the question above. Comments are given…

Q: Use the following precision for each row: Attribute Name Attribute Precision CHAR_WAIT_CHG 6,2…

A: QUESTION Modify the CHARTER table to add the attributes.   ANSWER A new column is added to a table…

Q: PUBLISHER Pub_Name Mailing Address Phone ISBN Title Publishes Price Pages BOOK ROYALTY_CHECK Check…

A: Below is the relation for given EERD

Q: Write a sql query to create the given table.

A:

Q: Please write the MySQL query for the following task: Find the first_name, last_name, employee_id,…

A: we can use the following MySQL query:

Q: Use the query box below to answer the questions, saving your query for each question. When you are…

A: The above question is solved in step 2 :-

Q: The table STUDENT has the attributes STUDENT_ID, NAME, SCHOOL_ID, and ADDR. The table SCHOOL has the…

A: In the realm of relational databases, it's essential to understand how to perform joins between…

Q: Create a table named Clerks, with 3 columns (employee-id, first name and job_id) where all employees…

A: The question has been answered in step2

Q: The table STUDENT has the attributes STUDENT_ID, NAME, SCHOOL_ID, and ADDR. The table SCHOOL has the…

A: The objective of the question is to identify the correct SQL query that will create a table showing…

Q: :When the primary key is not a composite key, the relation is said to be in at least fifth normal…

A: Lets see the solution.

Q: Name an example of an attribute in the following table. Student_ID Student Name Student Street…

A: Attributes are defined in terms of their domain. A domain defines the allowable values that an…

Q: The Car Maintenance team considered that the available maintenance tasks should also have the price…

A: TASK 1: -- Creating a new table MAINTENANCE_TYPES with following fields create table…

Q: Table Name: SUPPLIERS…

A: Insert the given data in SUPPLIERS TABLE: INSERT INTO SUPPLIERS VALUES(1, 'Lulu', 'DS', 'Salalah')…

Q: Figure Q3.16b The CUSTOMER and CAR Tables Database name: Ch03_Questions Table name: CUSTOMER Table…

A: Attributes are the properties or characteristics of entities. Relationships describe how entities…

Q: Convert the following relation into First Normal Form. If necessary, split into multiple tables to…

A: Name Color Marker Price Category ABC red x 15 toy ABC Yellow x 15 Luxury PQR blue y 10 Luxury…

Q: Q7: An ERD about a company has been mapped to the following Relations. Please choose the correct…

A: The above question is solved in step 2 :-

Q: use the picture below to answer the following question Add a ZIP field/column to the customer…

A: Add a column in the table You can use the ALTER TABLE statement in SQL Server to add a column to a…

Q: Which of the following is not true about a relation? Group of answer choices The cells of a relation…

A: Which of the following is not true about a relation?Group of answer choicesThe cells of a relation…

Q: Given the following schema. Primary keys are underlined and highlighted in yellow and foreign keys…

A: 1) SELECT AVG(Donation_Amount) as Amount FROM Donor D, Donation_Record DRWHERE D.Donor_id = 3329 AND…

Fundamentals of Datawarehouse

A data warehouse is a data repository which is used to store large quantities of historical data that are mostly used for creating reports that help businesses to identify their weaknesses and strengths. For example, demographics data about people of a region can help businesses identify the needs and preferences of the region’s population. A data warehouse acts as a central storage for storing data that comes from one or more heterogenous sources. It also consists of data which can be old and of historical value. One of the most important applications of this type of system is that it is used for supporting business intelligence and data analytics applications.