A database schema represents an interface between an element and a database; it provides the metadata for
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A database schema represents an interface between an element and a database; it provides the metadata for accessing the database. Given this view, schema evolution is a form of interface evolution. Discuss ways in which a schema can evolve and not break the existing interface, and ways in which it does break it. Describe how deprecation, versioning, and extension apply to schema evolution.
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Schema evolution refers to the process of modifying the structure of a database schema over time Its essential to ensure that while evolving the schema existing applications and systems that depend on ...View the full answer
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Related Book For 
Software Architecture In Practice
ISBN: 9780136886020
4th Edition
Authors: Len Bass, Paul Clements, Rick Kazman
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