ObjectSpaces and other OR mapping tools has it's own implementation and
features, but basically they all do the same for you. It lets you map the
properties and fields of your business objects directly to your database
tables, columns and views. It is a framework that lets you totally avoid
SQL and stored procedures. All of your data is transferred between objects and
data sources transparently. That means that you can concentrate on writing
business logic, not database access code. Your business objects doesn't
directly depend on the datasource. It eliminates the need to embed SQL
statements into business layer code and separates the business layer from
database provider and schema changes which improves maintainability.
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