1. X++ Maps: it can be used as a
temp data store for the given scope of a process. This takes us less over head,
and is much quicker than a TempTable. For Further reading
2. AOT Maps: A map can unify the
access to similar columns and methods that are present in multiple tables. You
associate a map field with a field in one or more tables. This enables you to
use the same field name to access fields with different names in different tables.
Methods on maps enable you to create or modify methods that act on the table
fields that the map references
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