What kind of data dictionary describes the access data structure of data in a table providing access to only one row?

The chosen answer highlights the specific aspect of the data dictionary that focuses on tables and their structure. A Table DDIC (Data Dictionary) provides detailed metadata about the tables in a database, including field definitions, data types, and constraints. One key characteristic of a Table DDIC is that it is designed to handle and describe the access data structure for a table, ensuring that programmatic access to the data from that table is efficient and well-defined.

In this context, having a focus on only accessing one specific row means that the Table DDIC optimizes the way individual rows are retrieved using their unique identifiers. This allows for precise data access and manipulation, which is essential in DBMS (Database Management Systems). The other data dictionary types mentioned do not concentrate solely on the access structure of individual table rows but cover broader or different functionalities related to data handling. Thus, the Table DDIC is the most appropriate choice for this scenario, as it directly relates to managing access at the row level in tables.