A DBMS that combines a DBMS and an application generator is ________ .

Answer: Option B

Solution:

Option B: Microsoft's Access
This option is correct. Microsoft's Access is a DBMS (Database Management System) that combines a DBMS and an application generator. It allows users to create and manage databases (DBMS functionality) as well as develop applications (application generator) using forms, reports, and queries.

Option A: Microsoft's SQL Server
This option is incorrect. Microsoft's SQL Server is a robust relational DBMS but does not primarily serve as an application generator. It focuses on managing relational databases and supporting SQL queries.

Option C: IBM's DB2
This option is incorrect. IBM's DB2 is a powerful relational DBMS similar to SQL Server. It is not specifically known for combining DBMS functionalities with an application generator.

Option D: Oracle Corporation's Oracle
This option is incorrect. Oracle's database management system (Oracle Database) is a leading relational DBMS but does not include built-in capabilities as an application generator.

Conclusion:
A DBMS that combines a DBMS and an application generator is Microsoft's Access, making Option B: Microsoft's Access the correct answer.