Hi Varun,
Open SQL allows you to access all database tables known to the SAP system, regardless of the database manufacturer. Sometimes, however, we may want to use database-specific SQL statements called Native SQL in your ABAP/4 program. To avoid incompatibilities between different database tables and also to make ABAP/4 programs independent of the database system in use, SAP has created a set of separate SQL statements called Open SQL. Open SQL contains a subset of standard SQL statements as well as some enhancements which are specific to SAP. A database interface translates SAP's Open SQL statements into SQL commands specific to the database in use. Native SQL statements access the database directly.
Hope this will help.
Regards,
Ferry Lianto
Bluesky
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