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Question 1USE sample;SELECT emp_lname, emp_fnameFROM employeeWHERE emp_no IN(SELECT emp_noFROM works_onWHERE enter_date between '06/01/2007' and '12/31/2007');Question 2What is a difference between Windows mode and Mixed mode with regard to security?Windows AuthenticationTrying to access an SQL server on the same PC its installed it might ask you for a Username andpassword. What's more, you are not, in case you're utilizing Windows Authentication. With theAuthentication in Windows , the SQL Server identifies correctly a user has the correct credentialsto access the server, and it utilizes these accreditations to permit the client into its databases(Zaniolo C, 1997). Window authentication is a more preferred way for signing in into an SQLinstance without having the need to save a password and username. This is not the case in instancewhere more than one connections are to be made in the SQL Server. In such cases SQL verificationis a preferred method.Mixed Mode AuthenticationThis is a type of authentication method that makes use of usernames and passwords. Clearly, acase of SQL Server can have various such client accounts (utilizing SQL validation) with various ...


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