adplus-dvertising
frame-decoration

Question

The lowest level operator to access data in query processing is _______

a.

File scan

b.

File manipulation

c.

File handling

d.

File organization

Posted under DBMS

Answer: (a).File scan

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. The lowest level operator to access data in query processing is _______

Similar Questions

Discover Related MCQs

Q. Search algorithms that use an index are referred to as _________

Q. Sorting of relations that do not fit in memory is called as _______

Q. A selection of the form satisfying the intersection of all records satisfying individual simple conditions is

Q. A selection of the form satisfying the union of all records satisfying individual simple conditions is

Q. A selection of the form giving all the records not satisfying simple individual conditions is ______

Q. Which of the following can be implemented?

Q. If the results of one operation are passed on to the other, it is called as ________

Q. The result of each intermediate operation are created and then are used for valuation of the next level operations, this evaluation is called as ________

Q. If the system makes repeated requests for tuples from the operation at the top of the table, it is called as _________

Q. If the operations do not wait to produce tuples, then it is called as _________

Q. State true or false: Sorting is an inherently blocking operation

Q. State true or false: Join is an inherently blocking operation

Q. Which of the following techniques does not exist?

Q. State true or false: Hybrid hash join is partially pipelined on the probe relation

Q. The usage of two buffers, with one continuing execution of the algorithm while the other is written is called as __________

Q. Which of the following functions does an iterator not provide

Q. If on every legal database instant, the two expressions generate the same set of tuples, the expressions are called as

Q. State true or false: Selection operations are commutative

Q. Which of the following operations are associative

Q. Which of the following set operations is not commutative?