BEGIN TRANSACTION SET ISOLATION LEVEL READ COMMITTED select sum(x) from R; select sum(x) from R; select sum(x) from R; commit; Suppose T2 is: BEGIN TRANSACTION SET ISOLATION LEVEL SERIALIZABLE insert into R values (10); insert into R values (20); insert into R values (30); commit; Before any of these transactions execute, the sum of the integers in R is 1000, and none of the integers are 10, 20, or 30. What are possible values that T1 can return

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You have just been hired as an information security engineer for a large, multi-international corporation. unfortunately, your company has suffered multiple security breaches that have threatened customers' trust in the fact that their confidential data and financial assets are private and secured. credit-card information was compromised by an attack that infiltrated the network through a vulnerable wireless connection within the organization. the other breach was an inside job where personal data was stolen because of weak access-control policies within the organization that allowed an unauthorized individual access to valuable data. your job is to develop a risk-management policy that addresses the two security breaches and how to mitigate these risks.requirementswrite a brief description of the case study. it requires two to three pages, based upon the apa style of writing. use transition words; a thesis statement; an introduction, body, and conclusion; and a reference page with at least two references. use a double-spaced, arial font, size 12.