Relational database systems use ____ to ensure that relationships between couple

Question

Relational database systems use ____ to ensure that relationships between coupled tables remain consistent entity-relationship diagrams referential integrity rules foreign keys one-to-one ordering intersection relations To use the analog telephone system for sending digital data, you must also use: DSL a modem. coaxial cable. a router twisted wire. The method of slicing digital messages into parcels, transmitting them along different communication paths, a reassembling them at their destinations is called: packet routing ATM software-defined networking multiplexing packet switching. Which of the following is an automated or manual file that stores information about data elements and data characteristics such as usage, physical representation, ownership, authorization, and security? Data definition diagram Referential integrity module Data dictionary Entity-relationship diagram Relationship dictionary A grouping of characters into a word, a group of words, or a complete number is called a record True False Both Oracle and Microsoft Access use SQL to retrieve information from a database. True False

Explanation / Answer

1. B) Referential integrity rules

2.B) a modem

3.E)packet switching

4.c)Data dictionary

5. False because A collection of characters into a word, a set of words, or a whole number is called field

6. True

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