Adabas DBMS is Software database management system and organizes to accesses data according to relationships among data fields and these relationships among data fields are expressed by Adabas files which consist of data fields and logical records. By using the Adabas DBMS you can also use the high level language for operate the data of database via NATURAL is Software is the fourth generation application development system that enables you to create, modify, read, and protect data that the DBMS manages. All Adabas DBMS files and data fields referenced in a NATURAL program must be defined to NATURAL through a Data Definition Module.