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Based on the picture please write an SQL theory for the following (DONT ANSWER THE ACTUAL QUESTION): Write an SQL Query to list the count of unique employees who have either worked for the project name 'Technological Disruption' or ‘Warroom 2030'?  Rename the output column as ‘Unique Employee Count’ (Hint: Use the keyword IN. and use Table Joining) Write an SQL Query to list the unique first name, last name and department number of all employees who have daughters named Alexandra born after 6-1-2002. Order by the last name (Hint: using table joining) Write a query to display the Project Name and the average number of hours clocked by employees that work for the project offered by department number 12, 21 or 24? Order the results in the increasing order of the average and rename the column as AvgHoursWorked. (hint: use the keyword IN)

Based on the picture please write an SQL theory for the following (DONT ANSWER THE ACTUAL QUESTION): Write an SQL Query to list the count of unique employees who have either worked for the project name 'Technological Disruption' or ‘Warroom 2030'?  Rename the output column as ‘Unique Employee Count’ (Hint: Use the keyword IN. and use Table Joining) Write an SQL Query to list the unique first name, last name and department number of all employees who have daughters named Alexandra born after 6-1-2002. Order by the last name (Hint: using table joining) Write a query to display the Project Name and the average number of hours clocked by employees that work for the project offered by department number 12, 21 or 24? Order the results in the increasing order of the average and rename the column as AvgHoursWorked. (hint: use the keyword IN)

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Based on the picture please write an SQL theory for the following (DONT ANSWER THE ACTUAL QUESTION):

  1. Write an SQL Query to list the count of unique employees who have either worked for the project name 'Technological Disruption' or ‘Warroom 2030'?  Rename the output column as ‘Unique Employee Count’ (Hint: Use the keyword IN. and use Table Joining)
  2. Write an SQL Query to list the unique first name, last name and department number of all employees who have daughters named Alexandra born after 6-1-2002. Order by the last name (Hint: using table joining)
  3. Write a query to display the Project Name and the average number of hours clocked by employees that work for the project offered by department number 12, 21 or 24? Order the results in the increasing order of the average and rename the column as AvgHoursWorked. (hint: use the keyword IN)

 

The image presents a database schema diagram with five entities detailing an organizational structure. It is suitable for an educational website focusing on database design or management. Each entity in the schema is described along with their attributes, with primary keys emphasized in bold/colored text. 1. **Employee** (`empNo`, firstName, lastName, address, DOB, sex, position, `deptNo`): - **empNo**: Employee Number (Primary Key) - firstName: First Name - lastName: Last Name - address: Address - DOB: Date of Birth - sex: Gender - position: Job Position - **deptNo**: Department Number (Foreign Key) 2. **Department** (`deptNo`, deptName, `mgrEmpNo`): - **deptNo**: Department Number (Primary Key) - deptName: Department Name - **mgrEmpNo**: Manager's Employee Number (Foreign Key) 3. **Project** (`projNo`, projName, `deptNo`): - **projNo**: Project Number (Primary Key) - projName: Project Name - **deptNo**: Department Number (Foreign Key) 4. **WorksOn** (`empNo`, `projNo`, hoursWorked): - **empNo**: Employee Number (Foreign Key) - **projNo**: Project Number (Foreign Key) - hoursWorked: Hours Worked 5. **Dependent** (`empNo`, **Dependent_name**, Sex, Bdate, Relationship): - **empNo**: Employee Number (Foreign Key) - **Dependent_name**: Name of the Dependent (Primary Key) - Sex: Gender of the Dependent - Bdate: Birthdate of the Dependent - Relationship: Relationship to Employee This diagram helps visualize the relationships and constraints between various data elements in a typical employee database system. It emphasizes the primary and foreign key constraints essential for database normalization and integrity.
Transcribed Image Text:The image presents a database schema diagram with five entities detailing an organizational structure. It is suitable for an educational website focusing on database design or management. Each entity in the schema is described along with their attributes, with primary keys emphasized in bold/colored text. 1. **Employee** (`empNo`, firstName, lastName, address, DOB, sex, position, `deptNo`): - **empNo**: Employee Number (Primary Key) - firstName: First Name - lastName: Last Name - address: Address - DOB: Date of Birth - sex: Gender - position: Job Position - **deptNo**: Department Number (Foreign Key) 2. **Department** (`deptNo`, deptName, `mgrEmpNo`): - **deptNo**: Department Number (Primary Key) - deptName: Department Name - **mgrEmpNo**: Manager's Employee Number (Foreign Key) 3. **Project** (`projNo`, projName, `deptNo`): - **projNo**: Project Number (Primary Key) - projName: Project Name - **deptNo**: Department Number (Foreign Key) 4. **WorksOn** (`empNo`, `projNo`, hoursWorked): - **empNo**: Employee Number (Foreign Key) - **projNo**: Project Number (Foreign Key) - hoursWorked: Hours Worked 5. **Dependent** (`empNo`, **Dependent_name**, Sex, Bdate, Relationship): - **empNo**: Employee Number (Foreign Key) - **Dependent_name**: Name of the Dependent (Primary Key) - Sex: Gender of the Dependent - Bdate: Birthdate of the Dependent - Relationship: Relationship to Employee This diagram helps visualize the relationships and constraints between various data elements in a typical employee database system. It emphasizes the primary and foreign key constraints essential for database normalization and integrity.
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