1. A cursor in Oracle is a pointer that allows control over the context area for retrieving rows from a query result.
2. It acts as a mechanism to process individual rows returned by a SQL query sequentially.
3. Cursors are automatically created for SQL statements executed in PL/SQL, even if not explicitly declared.
4. Explicit cursors must be declared, opened, fetched, and closed to manage query results manually.
5. Oracle maintains the current position of the cursor, allowing iteration over multiple rows one at a time.
6. Using cursors, you can process query results row by row instead of all at once, which helps in memory management.
7. Cursors can return multiple rows, but only one row is processed at a time using a fetch operation.
8. Attributes like %FOUND, %NOTFOUND, %ROWCOUNT, and %ISOPEN provide status information about the cursor.
9. Once a cursor is no longer needed, it must be closed to release associated resources and avoid memory leaks.
10. Cursors improve control and flexibility over complex queries in procedural operations within PL/SQL blocks.
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