The Importance of IS Management

Prentice Hall, Inc.

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3.Relational DBMS: where the relationships among data items are not expressly stated by pointers. Instead it is up to the DBMS to find the related items, based on the values of specified data fields. Store data in tables, each row=tuple, col.=attributive entity, DB of choice today.

nSee Figure 7-5 for relational operations

Four Data Models