employee (ID, person_name, street, city) works (ID, compапy лате, salary) соmpany (comрапулате, сіty) manages (ID, manager_id) Figure 3.19 Employee database.
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Consider the relational
underlined. Give an expression in SQL for each of the following queries. Find the name of each company whose employees earn a higher salary,
on average, than the average salary at “First Bank Corporation”.
![employee (ID, person_name, street, city)
works (ID, compапy лате, salary)
соmpany (comрапулате, сіty)
manages (ID, manager_id)
Figure 3.19 Employee database.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F77515a0c-d561-4c28-b3a7-3145ba419eed%2F8896c557-638b-4afa-b453-d6be5dd34a59%2Fsqpod2k.png&w=3840&q=75)
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- Review: Entity-Relationship (ER) "crow-feet symbol" О Опе-to-manпy: one sale person can Salesperson have many Serves Мапy-to-many customers Entity-Relationship (ER) Diagram for a Customer Places Customer Order Database urayram Tor a customer order database Includes Line Specifies Orders Product items Development of ER diagrams helps ensure that the logical structure of application programs is consistent with the data relationships in the Generates One-to-one relationship Invoice database. © 2013-2019 Cengage learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part, except for use as permitted in a license distributed with a certain product or service or otherwise on a password-protected website for classroom use. TBC: Instructions: Draw One integrated ER diagram on slide # 28 to show the relationships of the below tables Each 'student-profile' has many 'student- financials' 1. 2. Each 'student-profile' can take many 'student-courses' 3. Each…Airline Management There is a report on poor management of an airline company in South Africa. As a results, the stakeholders decided that all information concerning the assets, operations, and the employees of the company should be organised with the use of a database management system. The database needs to store information about the Airplane (identified by planeid, name as planename, and cruise_range), Flights (identified by ftnum, place of departure as departfrom, destination as arriveto, total milage as tmilage, departure time as departtime, arrival time as arrivetime, and price). Pilots (identified by empid and planeid), and Staff (identified by empid, name as empname, and salary). The Staff relation consist of all the employees of the company including the pilots, and you have been hired to design and manage the database. Source: Okonkwo, C. (2021) Write an SQL query on the following: Determine the identity (planeids) of all airplanes that can fly from Johannesburg to Cape…Electrical Engineering Q2) Draw the sequence diagram for a contact management system. It is a software program that enables users to easily store and find contact information, such as names, addresses and telephone numbers. This data is stored in a database.
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