Which of the following is NOT an essential factor for using Native SQL effectively in ABAP programs?

Using only SELECT statements is not an essential factor for effectively utilizing Native SQL within ABAP programs. Native SQL provides the ability to execute not only SELECT statements but also other SQL commands including INSERT, UPDATE, and DELETE. This capability allows developers to perform a full range of database operations directly against the underlying database, making it a powerful tool for database manipulation beyond just data retrieval.

The importance of the SQL syntax integrity ensures that the SQL is correctly structured and adheres to the conventions and requirements of the database being accessed. Specifying database connections is crucial because it indicates which database the Native SQL commands should operate on. Additionally, handling syntax checks is essential to ensure that the SQL code is valid and can be executed without errors, thus enhancing the robustness of the program.