Many-to-many relationships is a second sign of complex data. When x relates to many y's and y relates to many x's, it is a many-to-many relationship. In our example schema, a color swatch can relate to many types of sweaters and a type of sweater can have many color swatches.
More on many-to-many
More detail for the current topic: Many-to-Many Relationships
More on the general topic: Complex Data
Barry & Associates, Inc.
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The Savvy Manager's Guide
Douglas K Barry is also the author of a book that explains Web Services, service-oriented architecture, and Cloud Computing in an
easy-to-understand, non-technical manner.
by Douglas K Barry with David Dick
This is a guide for the savvy manager who wants to capitalize on the wave of change that is occurring with Web Services, service-oriented architecture, and—more recently—Cloud Computing. The changes wrought by these technologies will require both a basic grasp of the technologies and an effective way to deal with how these changes will affect the people who build and use the systems in our organizations. This book covers both issues. Managers at all levels of all organizations must be aware of both the changes that we are now seeing and ways to deal with issues created by those changes.