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Consider the relational schema above. The following SQL statement updates the duty type of a particular work shift: UPDATE WorkingShift SET dutyType = 'Security' WHERE
Consider the relational schema above. The following SQL statement updates the duty type of a particular work shift:
UPDATE WorkingShift
SET dutyType = 'Security'
WHERE WorkingShiftID = 5001;
QUESTION/TASK: Give an example of a query or statement that would conflict with the above UPDATE statement if both the statements are run at the same time (when run concurrently). Explain what could go wrong, and how locking tuples would solve the problem.
Publisher Em ployee EmployeeID CHAR(8) Branch BranchID INT Branch Name VARCHAR(45) PublisherID CHAR(3) PublisherName VARCHAR(45) PublisherCity VARCHAR(30) PublisherContactNo CHAR(10) EmployeeName VARCHAR(45) | EmployeeType VARCHAR (20) Branch Address VARCHAR. . . Supervisor-EmployeeID CH ONum berofEm ployees INT Inventory Branch BranchID INT DutyRoster EmployeeID CHAR(8) BranchID INT ? Book_BookID INT AvailableQuantity INT tWorkingShiftID INT Book WorkingShift WorkingShiftID INT workingShiftweekDay VARCHAR(15) BookID INT BookTitle VARCHAR(45) BookType VARCHAR(45) Book Price DECIMAL (8,2) >1sPaperback VARCHAR(3) Publisher-Publisher!D CHAR(3) Writes ? Author AuthorID INT ? Book_BookID INT Author WorkingShiftStartTime TIME(6) WorkingShiftEndTim e TIME(6) dutyType VARCHAR(20) AuthorID INT AuthorName VARCHAR(45) AuthorE mail Address VARCHAR(45) sequenceNumber INTStep by Step Solution
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