To answer this question, you need to understand the concept of cursors in SQL. Let's go through each option to understand why it is correct or incorrect:
Option A) Cursor is a named Private SQL area - This option is correct. A cursor is a named private SQL area that stores information about a specific SQL statement. It allows the database to process SQL statements and retrieve data in a controlled and efficient manner.
Option B) Cursor holds temporary results - This option is incorrect. Cursors do not hold temporary results. Instead, they hold the information needed to retrieve and process the results of a query.
Option C) Cursor is used for retrieving multiple rows - This option is correct. One of the main purposes of a cursor is to retrieve multiple rows of data from a result set. Cursors provide a way to fetch rows one by one or in batches, enabling the processing of large result sets.
Option D) SQL uses implicit Cursors to retrieve rows - This option is correct. SQL uses implicit cursors to retrieve rows. Implicit cursors are automatically created by the database management system (DBMS) when a SQL statement is executed. They are used to retrieve single rows or a small number of rows.
The correct answer is B) Cursor holds temporary results. This option is incorrect because cursors do not hold temporary results. Instead, they hold the information needed to retrieve and process the results of a query.