A multimedia database is like a big toy box with different compartments where you can store different kinds of information.
Imagine the box has different sections for pictures, videos, audio files, and text files. You can put in pictures of your favorite toys, videos of you playing with them, audio files of toy sounds, and descriptions of the toys in a text file.
Just like how you can sort your toys in different sections of the box, you can sort your different kinds of information in the different sections of the multimedia database.
When you want to play with your toys, you can easily find what you want by opening the section you need. Similarly, when you want to find a specific picture, video, audio file, or text file, you can search for it in the multimedia database.
A multimedia database is beneficial because it makes it easier for you to find what you're looking for and keeps all of your different kinds of information organized in one place.