Referential integrity is a relational database concept, which states that table relationships must always be consistent. In other words, any foreign key field must agree with the primary key that is referenced by the foreign key. Thus, any primary key field changes must be applied to all foreign keys, or not at all. The same restriction also...
Fiber to the node (FTTN) is one of several options for providing cable telecommunications services to multiple destinations. Fiber to the node helps to provide broadband connection and other data services through a common network box, which is often called a node.
Fiber to the node may also be called fiber to the neighborhood.
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