Hierarchical databases do not use ………… as relational databases do for searching procedures

The foreign key is not necessarily the …….. in its current table.

The database management software creates and reads the data dictionary to ascertain what ……… exist and checks to see if specific users have the proper access right to view them.

………..is a computer with a Web server that serves the pages for one or more websites.

………is a communication medium where data are transformed into light pulses. 

The network database model uses………..