Explanation: READ UNCOMMITTED is the most optimistic concurrency isolation option available in SQL Server. 10. Which of the following pair of regular expression are not equivalent?
A. 1(01)* and (10)*1
B. x(xx)* and (xx)*x
C. (ab)* and a*b*
D. x+ and x*x+
Answer:A
Explanation: READ UNCOMMITTED is the most optimistic concurrency isolation option available in SQL Server. 10. Which of the following pair of regular expression are not equivalent?
A. 1(01)* and (10)*1 B. x(xx)* and (xx)*x C. (ab)* and a*b* D. x+ and x*x+
Explanation: (ab)*=(a*b*)*. Sanfoundry Global Education & Learning Series – Database Management System.