Once a database is normalized, relationships between the data in multiple tables ... (such as AutoNumber in Access of Identity in SQL Server). In addition, foreign key values can be Null, although ...

Servers help ensure that information flows freely between them. A computer network ... nearby like printers or fax machines. A functional relationship can also classify a network.

In a relational database, it is necessary to define the relationship that exists between different entities. Key fact At Higher level, it is necessary to understand and exemplify one-to-one ...