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单选题
Application A currently holds an exclusive lock on a single row and application B tries to access that row. If lock timeout is set to -1 and both applications are using isolation level RS, which of the following will occur?（）
A
Applications A and B will cause a deadlock situation
B
Application B will read the previous version of the row
C
Application B will read the row and see uncommitted changes made by application A
D
Application B will be placed in a lock-wait state until application A releases its lock
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单选题Application A currently holds an exclusive lock on a single row and application B tries to access that row. If lock timeout is set to -1 and both applications are using isolation level RS, which of the following will occur?（）A
Applications A and B will cause a deadlock situationB
Application B will read the previous version of the rowC
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Multiple application servers must be in a single resource group.B
Multiple application servers per resource group may be monitored.C
Multiple resource groups must each contain a single application server.D
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Rollback the transaction in both applications.B
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Send a message to let the administrator know of the situation and decide which application or applications should be terminated.
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单选题Application A is designed to execute the following SQL statements within a single Unit of Work (UOW). UPDATE employee SET salary = salary * 1.1 WHERE empno='000010' UPDATE department SET deptname = 'NEW dept' WHERE deptno='A00'Application B is designed to execute the following SQL statements within a single Unit of Work (UOW). UPDATE department SET deptname = 'OLD DEPT' WHERE deptno='A00' UPDATE employee SET salary = salary * 0.5 WHERE empno='000010' Application A and application B execute their first SQL statement at the same time. When application A and application B try to execute their second SQL statement, a deadlock occurs. What will happen?（）A
The database manager will rollback the transaction in both applications.B
The database manager will rollback the transaction in one of the two applications.C
Application B will successfully update the EMPLOYEE and DEPARTMENT tables; Application A will be placed in a lock wait state.D
Application A will successfully update the EMPLOYEE and DEPARTMENT tables; Application B will terminate when the lock timeout value is reached.
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