In SAP HANA, what is a Procedure?

A Procedure in SAP HANA refers to a reusable SQLScript block that encapsulates complex business logic. This means that it allows developers to write and store a series of SQL statements and control structures under a single name, which can be invoked repeatedly as needed. This is especially beneficial for implementing complex calculations, data transformations, or any significant logic that might otherwise require redundant code.

By using Procedures, you can enhance code maintainability and modularity. They enable you to separate logic from application code and can be shared across different applications, promoting reusability and reducing the likelihood of errors that might come from duplicating code.

The other options do not accurately represent the functionality of Procedures in SAP HANA. A one-time SQL command does not capture the essence of reusability inherent in Procedures. Monitoring tool functions and user interfaces do not align with the role of a Procedure, which specifically deals with programming logic and data manipulation rather than administration or user interaction.