Is there any meaning to the term "Abstract Data Type?"

What are the advantages and disadvantages of adopting user-defined ordinal kinds when it comes to data types? There are various positives and negatives associated with using an associative array, all of which will be covered in more depth below.

I am having some issues in understanding pointers, references and overloading and how should I apply them? It is because I already understand how to define, use, and understand the theory behind it. Yet, still lost when trying to apply them in various situations.

A strongly-typed data type implementation supports strongly-typed data, whereas a loosely-typed data type implementation supports loosely-typed data.