Q. Pipelines can be executed in

View solution

Q. In a _________ the system makes repeated requests for tuples from the operation at the top of the pipeline.

View solution

Q. In a _____________ operations do not wait for requests to produce tuples, but instead generate the tuples eagerly.

View solution

Q. Each operation in a demand-driven pipeline can be implemented as an ____ that provides the following functions: open(), next(), and close().

View solution

Q. The iterator maintains the __________ of its execution in between calls, so that successive next() requests receive successive result tuples.

View solution

Q. Tuples are generated ___________ in producer-driven pipelining, they are generated ________ on demand, in demand-driven pipelining.

View solution

Q. When two inputs that we desire to pipeline into the join are not already sorted it is the _____________ technique.

View solution

Q. Let R(A,B,C,D,E,P,G) be a relational schema in which the following FDs are known to hold:

AB->CD
DE->P
C->E
P->C
B->G

The relation schema R is

View solution

Q. Which of the following is/are false for RAW mode of FOR XML?

View solution

Q. ___________ refers to the ability of the system to recover committed transaction updates if either the system or the storage media fails.

View solution

Q. Which utilities can we used to export data from sql server to a text file?

View solution

Q. You have a column that will only contain values from 0 to 256. What is the most economical data type to use for the column?

View solution

Q. Problems occurs if we don’t implement proper locking strategy

View solution

Q. Which of the following fixed database roles can add or remove user IDs?

View solution

Q. By default sql server has ___________ isolation level

View solution

Q. Which feature converts row data to column for better analytical view?

View solution

Q. Which of the following statements is/are not true for SQL profiler?

View solution

Q. Which global variables can be used to determine if a transaction is still open?

View solution

Q. Which statement is used to define a cursor?

View solution

Q. What is the default “SORT” order for a SQL?

View solution