Answer :

Older systems that often contain data of poor quality are called Legacy systems.

What are Legacy systems?

A legacy system is known to be a kind of an outdated computing software and it is known to be called an hardware that is said to be old but still in use.

Note that system is one that tends to meets the requirement that it was originally made for, but it is one that do not allow room for growth.

Therefore, based on the above, the Older systems that often contain data of poor quality are called Legacy systems.

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