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Primary Keys and Indexes

Computer Science · Class 12

A primary key prevents duplicate identity; indexes speed retrieval but add storage and update work.

Primary keys and indexes
Primary
indexes
A primary key prevents duplicate identity
Primary keys and indexes: A primary key prevents duplicate identity; indexes speed retrieval but add storage and update work.
Primary: A primary key prevents duplicate identity; indexes speed retrieval but add storage and update work.
indexes: A primary key prevents duplicate identity; indexes speed retrieval but add storage and update work.
CONCEPT — What it means: A primary key prevents duplicate identity; indexes speed retrieval but add storage and update work.

IPO model — Primary Keys and Indexes — original sketch for this lesson (not copied from a textbook).