In query processing, the ___________ is the lowest-level operator to access data.
A. Index Search
B. Linear search
C. File scan
D. Access paths
Answer:A
In query processing, the ___________ is the lowest-level operator to access data.
A. Index Search B. Linear search C. File scan D. Access paths
Explanation: File scans are search algorithms that locate and retrieve records that fulfill a selection condition.