According to Avaloq standards, what is essential for database access?

The correct answer identifies the "Data Dictionary" as essential for database access according to Avaloq standards. The Data Dictionary serves as a critical repository of metadata, which includes definitions of data elements, their relationships, and constraints. It provides a structured way to access and manage data by outlining the schema and organization of the database. This foundation is pivotal because it enables developers and database administrators to understand how to interact with the database effectively, ensuring they interpret and manage data correctly in the context of Avaloq applications.

In Avaloq, referring to the Data Dictionary is necessary for executing queries, understanding field types, and ensuring compliance with data models. It essentially acts as a guide that helps in the development and maintenance of systems that interact with the database, supporting accurate data retrieval and manipulation.