SQL ANSWERED -- Create a view called EMP_VU based on the employee number, employee name, and department number from the EMP table. Change the heading for the employee name to EMPLOYEE. Display the contents of the EMP_UV view. ANSWERED --Select the view name and text from the data dictionary USER_VIEWS. ANSWERED -- Using your EMP_UV, enter a query to display all employee names and department numbers. ANSWERED -- Create a view named DEPT20 that contains the employee number, employee name, and department number for all employees in department 30. Label the view columns EMPLOYEE_ID, EMPLOYEE, and DEPARTMENT_ID. Do not allow an employee to be reassigned to another department through the view. ANSWERED -- Display the structure and contents of the DEPT20 view. Attempt to reassign Turner to department 20. Create a view called SALARY_VU based on the employee name, department name, salary, and salary grade for all employees. Label the column Employee, Department, Salary, and Grade, respectively.
SQL ANSWERED -- Create a view called EMP_VU based on the employee number, employee name, and department number from the EMP table. Change the heading for the employee name to EMPLOYEE. Display the contents of the EMP_UV view. ANSWERED --Select the view name and text from the data dictionary USER_VIEWS. ANSWERED -- Using your EMP_UV, enter a query to display all employee names and department numbers. ANSWERED -- Create a view named DEPT20 that contains the employee number, employee name, and department number for all employees in department 30. Label the view columns EMPLOYEE_ID, EMPLOYEE, and DEPARTMENT_ID. Do not allow an employee to be reassigned to another department through the view. ANSWERED -- Display the structure and contents of the DEPT20 view. Attempt to reassign Turner to department 20. Create a view called SALARY_VU based on the employee name, department name, salary, and salary grade for all employees. Label the column Employee, Department, Salary, and Grade, respectively.
Chapter6: Additional Database Objects
Section: Chapter Questions
Problem 6HOA: A new table has been requested to support tracking automated emails sent to customers. Create the...
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SQL
SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
Queries
A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
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SQL
- ANSWERED -- Create a view called EMP_VU based on the employee number, employee name, and department number from the EMP table. Change the heading for the employee name to EMPLOYEE. Display the contents of the EMP_UV view.
- ANSWERED --Select the view name and text from the data dictionary USER_VIEWS.
- ANSWERED -- Using your EMP_UV, enter a query to display all employee names and department numbers.
- ANSWERED -- Create a view named DEPT20 that contains the employee number, employee name, and department number for all employees in department 30. Label the view columns EMPLOYEE_ID, EMPLOYEE, and DEPARTMENT_ID. Do not allow an employee to be reassigned to another department through the view.
- ANSWERED -- Display the structure and contents of the DEPT20 view.
- Attempt to reassign Turner to department 20.
- Create a view called SALARY_VU based on the employee name, department name, salary, and salary grade for all employees. Label the column Employee, Department, Salary, and Grade, respectively.
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