When you open a cursor, DB2 will always get all rows that meet the selection criteria and create a result set?
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Yes
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No
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It Depends
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None of the above
When opening a cursor, DB2 does not necessarily materialize the entire result set immediately. Depending on the query design, optimization path, and cursor type, DB2 may fetch rows dynamically as the application requests them.
To answer this question, you need to understand the concept of cursors in DB2.
A cursor is a database object that allows you to retrieve and manipulate rows from a result set one at a time. When you open a cursor in DB2, it does not automatically fetch all the rows that meet the selection criteria and create a result set. Instead, it establishes a connection to the database and sets up a context for retrieving rows.
Therefore, the correct answer is:
B. No - When you open a cursor in DB2, it does not automatically get all rows that meet the selection criteria and create a result set.