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Many students who study using our platform have reported that a large number of the practice questions here are very similar to those that appear in real exams. View Courses
In database terminology, what is a "cursor" typically used for?
Correct Answer: C. Iterating over the rows in the result set of a query
In database terminology, a cursor is used to iterate over the rows in the result set of a query one at a time. Unlike standard SQL operations that handle entire sets of data simultaneously, cursors allow sequential row-by-row processing. This is useful for performing complex logic, updates, or calculations on individual rows within stored procedures or scripts, enabling more granular control over data manipulation.
Why Other Options are Incorrect:
A. Encrypting data
Cursors do not perform encryption. Encryption involves securing data through algorithms and keys, which is unrelated to the cursor’s function of row-by-row data traversal.
B. Backing up the database
Backing up a database involves copying data for recovery purposes and is managed by backup utilities or commands, not by cursors, which are used for data processing within queries.
D. Connecting to a database
Connecting to a database is handled by database drivers or connection libraries, not by cursors. Cursors operate after a connection is established, focusing on data retrieval and manipulation.
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