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Its Will Provide you only Basics of Data Basis
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Basic Concepts of Data Bases
Presented By Danial MasoodReg #1421-310031
&Bilal Mushtaq
Reg #1421-310033
Introduction to Database
A database is any organized collection of data. Some examples of databases you may encounter in your daily life are: ◦Phone Contacts ◦airline reservation system ◦papers in your filing cabinet ◦Banking Record.
Data vs. information:What is the difference?
What is data?◦ Data can be defined in
many ways. Information science defines data as unprocessed information.
What is information?◦ Information is data that
have been organized and communicated in a coherent and meaningful manner.
◦ Data is converted into information, and information is converted into knowledge.
◦ Knowledge; information evaluated and organized so that it can be used purposefully.
Why do we need a database? Keep records of our:
◦ Clients◦ Staff◦ Volunteers
To keep a record of activities and interventions;
Keep sales records; Develop reports; Perform research Longitudinal tracking
What is the ultimate purpose of a database management system?
Is to transform
Action
Knowledge
InformationData
More about database definition
What is a database? A structured set of data held in a
computer, especially one that is accessible in various ways.
Let’s explore some examplesOutlook contacts
GIS-GPS systems
Some models about DatabaseNon-relational database
Relational database
Non Relational DatabasesNon-relational databases place
information in field categories that we create so that information is available for sorting and disseminating the way we need it. Example: a spread sheet
Relational Database
In relational databases, fields can be used in a number of ways (and can be of variable length), provided that they are linked in tables. It is developed based on a database model that provides for logical connections among files (known as tables) by including identifying data from one table in another table
Some DefinitionsA File: A group or collection of similar records,
A record book: a “Hawlet Packard" of data records, like address lists, inventory lists, classes
A field: one category of information, i.e., Name, Address, Semester Grade, Academic topic
A record: one piece of data, i.e., one student's
information, a recipe, a test question
A layout: a design for a database that contains field names and possibly graphics.
Fundamental building blocksTables comprise the fundamental building blocks of any database. If you're familiar with spreadsheets, you'll find database tables extremely similar. Take a look at this example of a table sample database:
Data Entry –considerationsBarcode scanners
◦USB or◦Wireless attached to
a Palm or Pocket PCPocket PC
◦Wi-Fi 802.11g, Bluetooth
◦Wireless networks (real-time on demand systems)