A database management system based on the concept of ownership is

Network topology
Network layer
Network database system
Network license system E. None of the above

The correct answer is: E. None of the above

A database management system (DBMS) is a software application that allows users to create and manage databases. A database is a collection of data that is organized in a way that makes it easy to retrieve and use. DBMSs are used in a variety of applications, including business, government, and education.

There are many different types of DBMSs, each with its own strengths and weaknesses. Some of the most popular DBMSs include MySQL, Oracle, and Microsoft SQL Server.

The concept of ownership is not specific to any particular type of DBMS. In fact, it is a general concept that can be applied to any type of data. Ownership refers to the right to control and access data. In the context of a DBMS, ownership typically refers to the right to create, update, and delete data.

Network topology is the physical layout of a computer network. It refers to the way that the computers in the network are connected to each other. There are many different types of network topologies, including star, bus, and ring.

Network layer is a layer in the Open Systems Interconnection (OSI) model. It is responsible for routing data between different networks.

Network database system is a type of database system that is designed to be used on a network. It typically includes features that allow users to share data and collaborate on projects.

Network license system is a type of software licensing system that is used to manage access to software on a network. It typically includes features that allow administrators to track who is using the software and to limit the number of users who can access it at any given time.