Question: 1)Consider a selection query of equality on a key attribute .Assume that the primary b+ tree index on the key attribute is used in the

1)Consider a selection query of equality on a key attribute .Assume that the primary b+ tree index on the key attribute is used in the search and the tree has 100 levels how many seeks and block transfers are a needed ?

2)Difference between searching using primary b+ tree index and secondary b+ tree index ?

3)Ever serial schedule is recoverable , true or false ?

4)Ever concurrent schedule is not recoverable , true or false ?

5)Ever cascadeless schedule is recoverable , true or false ?

6)Difference between two-phase locking and strict two-phase locking protocal ?

7)difference between rigrous two-phase locking protocal and strict two-phase locking protocal ?

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