Explain the purpose of an entity relationship diagram
What will be an ideal response?
ERDsare a common way to visually express the tables and relationships in your database. An ERD does not tell you anything about data flow and is a fixed view of the database structure.
Computer Science & Information Technology
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Indicate whether the statement is true or false
Computer Science & Information Technology
The integrity constraint that ensures that every many record in a one-to-many relationship has a matching record in the one file is called:
A) entity integrity. B) referential integrity. C) domain integrity. D) ordinal integrity. E) cardinal integrity.
Computer Science & Information Technology