The correct answer is: D. both (a) and (b)
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 can be used to store and manage a variety of data, including text, numbers, images, and videos.
DBMSs offer a number of advantages over traditional file systems. First, DBMSs allow users to store and manage large amounts of data. Second, DBMSs provide a number of features that make it easy to retrieve and use data, such as queries and reports. Third, DBMSs can be used to protect data from unauthorized access.
There are a number of different DBMSs available, including Oracle, MySQL, and Microsoft SQL Server. The choice of DBMS depends on the specific needs of the user.
Option A is correct because DBMSs allow users to access multiple files simultaneously. This is done by creating a database that contains all of the data that needs to be accessed. The DBMS then manages the access to the data, ensuring that only authorized users can access it.
Option B is correct because DBMSs can do more than a record management system. A record management system is a software application that allows users to create and manage records. A record is a collection of data about a single entity, such as a customer or a product. Record management systems are typically used to store and manage data that is not related to each other. DBMSs, on the other hand, can store and manage data that is related to each other. This makes DBMSs more powerful than record management systems.
Option C is incorrect because DBMSs are not a collection of programs for managing data in a single file. DBMSs are a collection of programs for managing data in a database. A database is a collection of data that is organized in a way that makes it easy to retrieve and use.
Option E is incorrect because both options A and B are correct.