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3985608
Database Schema
Description
Understanding SQL
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advance database
systems architecture
advanced database
key skills
Mind Map by
Barbara Gerwien
, updated more than 1 year ago
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Created by
Barbara Gerwien
about 9 years ago
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Resource summary
Database Schema
Annotations:
This is a complete logical view of the database.
All tables
Annotations:
Relations - All relations are tables but not all tables are relations.
Columns in each table
Primary Key of Each table
Annotations:
Primary Key values must be unique in every row. Also known as the Entity Integrity Constraint
Foreign Keys that link the tables together
Annotations:
Foreign Key - A column or composite of columns that is the primary key of a table other than the one in which it appears.
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