What is an unsafe query? Give an example and explain why it is important to disallow such queries.

Q: Get a list of visit reasons of which the average cost is greater than 2000 but less than 2050. •…

A: The SQL Query to extract the given output is: SELECT VisitReason, AVG(Cost) AS “avgcost” FROM visit…

Q: SQL Commands for: 1.) TOP-N query. Find the ssn, lname, and salary of the four highest paid…

A: According to bartleby guidelines we are supposed to answer only 3 subquestion so those questions has…

Q: Create the following table in your database with the following schema: Table: orders | Column Name 1…

A: Here are all the queries:

Q: Trying to write SQL statements for these. Having trouble with my returns.I'm also having issues with…

A: ```sql -- 1. INSERT statement for adding a row to the Departments table INSERT INTO Departments…

Q: ou write the SQL query below. Add a statement to your SQL query that will retrieve the first 3…

A: Q; You write the SQL query below. Add a statement to your SQL query that will retrieve the first 3…

Q: 4. Question 4   You are working with a database table that contains invoice data. The table…

A: The solution to the given problem is below.

Q: Write an SQL query to extract the answer directly.

A: The provided  SQL code uses the MAX function to calculate the maximum cost of all ER visits with the…

Q: In a sql database give an example of a search problem that will work with an inner join and will not…

A: Find the answer given as below :

Q: Open the Missing Addresses query in Design view. Add a new column to determine if a customer does…

A: Actually, file is a stored data with file name. The code has given below:

Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.