What is typically found within a data dictionary?

A data dictionary serves as a comprehensive reference that details the structure, relationships, and various attributes of data elements within a database. Typically, it includes specifications of database tables and fields, which encompass essential information like the types of data stored (such as integers, strings, dates), constraints (such as primary keys or foreign keys), and descriptions of how each field relates to one another.

This framework enables users, developers, and data analysts to understand the context and usage of data more efficiently, ensuring that they can correctly interpret and manipulate the data within the associated database. The specifications create a common language among stakeholders and serve as essential documentation when creating queries or generating reports.

Other choices focus on elements that might be part of application development or user experience but do not pertain specifically to the contents of a data dictionary. Examples of user interfaces and mock-ups of software features may help with design and usability, while dynamic data visualizations pertain to the presentation of data rather than its foundational structure and meaning.