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...
Precautionary steps and up-to-date firmware can protect your phone from most mobile hackers.
Andrew Beattie has spent most of his career writing, editing and managing Web content in all its many forms. He is especially interested in the future of search and the application of analytics to the business world. Full Bio
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