Which statements are true regarding access methods to tables in SAP?

Hashed tables in SAP are designed to allow access through a unique key, which makes them particularly useful for situations where quick lookup times are essential. The hashing mechanism ensures that each key maps to a unique location in the table, allowing for rapid retrieval of data corresponding to that key. This specific feature of hashed tables enhances performance when working with large datasets where finding a specific row efficiently is paramount.

While sorted tables also utilize a key for accessing records, they do not necessarily require uniqueness. Therefore, stating that a sorted table is always accessed by a unique key is misleading. Similarly, standard tables in SAP have different access methods; they can be accessed either through linear search or by using an index, which allows for additional flexibility and performance optimization depending on how the table is utilized. Thus, the access methods for standard tables are not confined to indexed access only, as they can also feature direct access when an appropriate index is in place.