Identify the common abbreviation for software that lets users create, retrieve, and maintain records in a database, providing a layer between applications and stored data.

Introduction / Context:
The software that manages databases, enforces integrity, processes queries, and mediates between applications and stored data is universally known by a standard acronym. Recognizing this term is essential for communicating about architectures and vendor products in data management.

Given Data / Assumptions:

• The question asks for a widely used abbreviation, not a brand.
• The software supports create, retrieve, update, and delete operations.
• It provides query processing, security, and concurrency control.

Concept / Approach:
DBMS stands for Database Management System. It provides data definition (DDL), data manipulation (DML), transaction processing, recovery, and access control. Other acronyms listed are unrelated or obsolete in this context: DASD refers to storage devices; FMS/EMMS do not denote the standard database manager term.

Step-by-Step Solution:

Verification / Alternative check:
Commercial systems (e.g., relational offerings) are all categorized as DBMSs, reinforcing the correctness of the acronym.

Why Other Options Are Wrong:

• DASD: Direct Access Storage Device—hardware/storage term.
• FMS/EMMS: Not the standard umbrella for database managers.
• None: invalid because DBMS is correct.

Common Pitfalls:
Confusing storage hardware acronyms with software layers that implement database functionality.

Final Answer:
DBMS