What type of fixed string uses the assigned amount of field length regardless of the number of characters?

The type of fixed string that uses the assigned amount of field length regardless of the number of characters is indeed designated as a Fixed String. This data type is defined to occupy a specific and constant number of bytes in memory, meaning that it will always take up the same amount of space, no matter how many characters it contains.

For instance, if a Fixed String is defined to have a length of 10 characters, it will always reserve space for all 10 characters, and if it is only assigned a shorter string, the remaining space will typically be filled with padding, such as spaces. This ensures that the data storage is uniform and predictable and is particularly useful in cases where a consistent record size is necessary for data processing or integration tasks.

In contrast, a Variable String allows the allocation of space to dynamically adjust to the actual number of characters, and thus does not reserve a constant length. W_String and V_String are specific types of string definitions often found in different contexts or systems, but they do not represent the fixed-length characteristic that is central to the Fixed String definition.