- Data in containers are stored and retrieved sequentially, but a temporary table enables you to define indexes to speed up data retrieval.
- Containers provide slower data access if you are working with many records. However, if you are working with only a few records, use a container.
- Another important difference between temporary tables and containers is how they are used in method calls.
When you pass a temporary table into a method call, it is passed by reference.
Containers are passed by value.
When a variable is passed by reference, only a pointer to the object is passed into the method.
When a variable is passed by value, a new copy of the variable is passed into the method. If the computer has a limited amount of memory, it might start swapping memory to disk, slowing down application execution.
When you pass a variable into a method, a temporary table may provide better performance than a container