What type of data includes audio and video files?

The correct choice refers to unstructured data, which encompasses data formats that do not have a pre-defined data model or are not organized in a predefined manner. Audio and video files are prime examples of unstructured data because they consist of a continuous stream of information that does not fit neatly into traditional rows and columns like structured data does.

Unstructured data is often rich in detail and can include various formats such as images, text, audio recordings, and video clips. This lack of structure makes it more challenging to analyze using standard database tools; however, technologies such as big data analytics and machine learning are increasingly being developed to help analyze and extract insights from unstructured data effectively.

In contrast, structured data is highly organized and formatted, allowing easy query and analysis, typically found in relational databases. Semi-structured data possesses some organizational properties but does not conform to a rigid structure, such as JSON or XML. Tabular data, which is usually found in databases, refers specifically to data organized in rows and columns, similar to a table. Understanding these categories helps differentiate the various forms of data and their specific use cases in data management and analysis.