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PT 2520 Unit 3

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Subject: 
Art History
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Data modeling
Data management
Many-to-many
Database design
Cardinality
Weak entity
Database management system
Surrogate key
Compound key
Entity-relationship model
Associative Entities
Technology

PT2520 Clarence Gross 1/19/12 Unit 3 The logical design is independent of any database management system. True The physical design is the logical design adapted to the constraints and features of the database management system. True You should always try to create cross relationships between parent and tables. False Naming conventions help support clarity and consistency in database design. True One to one relationships between entities are valid but rare. True Crow?s feet notation conveys more information about cardinality than arrow notation. True In a one-to-many relationship, each row on in the primary key table can be related to any number of rows in the foreign key or child table. True

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