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Net Work Security

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Submitted By manalaljassmi
Words 361
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REVIEW QUESTIONS CHAPTER 1
DATABASE SYSTEMS (LAB ASSIGNMENT 1) 1) Discuss each of the following terms: * Data
Data is information that has been translated into a form that is more convenient to move or process.
Data is a raw fact or unprocessed information * Field
Auto-increment allows a unique number to be generated when a new record is inserted into a table.

* Record
A record is for the purpose of future reference.

A record is made in the form of data
A table in database contained from rows called record
Record is when related data is being processed, filed and kept, that is a record * File functions allow you to access and manipulate the filesystem

2) What is a DBMS, and what are its functions? Database Management System, is a software tool that makes it possible to organize data in a database. 3) Explain the difference between data and information?
Data is a building block, Information gives meaning and context.

4) What are the main components of a database system? Explain why database design is important?
An Access database consists of several different components. Each component listed is called anobject.
Tables, Queries, Forms, Reports, Pages, Macros, Modules.
Database Design is the database structure that will be used as plan to store and manage data. The database management system (DBMS) is the software used to implement a database design. 5) What is the role of a DBMS, and what are its advantages? What are its disadvantages? * improved data sharing * Improved data security * better data integration * minimized data inconsistency * improved data access * improved decision making * Increased end-user productivity
Advantages
Controlling Redundancy
Data Consistency
Data Sharing:
Data Integration:
Integrity Constraints
Data Security
Data Atomicity:
Database Access

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