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Before you begin database, you should knowabout database system.What is database?Other definition of database.

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A database is any organized collection ofdata. Some examples of databases you mayencounter in your daily life are:

a telephone bookT.V. Guideairline reservation systemmotor vehicle registration recordspapers in your filing cabinetfiles on your computer hard drive.

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What is data?Data can be defined in manyways. Information science

defines data as unprocessedinformation.

What is information?Information is data that havebeen organized andcommunicated in a coherent

and meaningful manner.Data is converted intoinformation, and information isconverted into knowledge.Knowledge; informationevaluated and organized sothat it can be used purposefully.

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Keep records of our:ClientsStaffVolunteers

To keep a record of activities and interventions;Keep sales records;Develop reports;Perform research

Longitudinal tracking

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Data Information Knowledge Action

Is to transform

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Non-relational databasesNon-relational databases place information in field categoriesthat we create so that information is available for sorting anddisseminating the way we need it. The data in a non-relationaldatabase, however, is limited to that program and cannot beextracted and applied to a number of other software programs,or other database files within a school or administrative system.

The data can only be "copied and pasted.“ Example: a spreadsheet

Relational databasesIn relational databases, fields can be used in a number of ways(and can be of variable length), provided that they are linked intables. It is developed based on a database model that providesfor logical connections among files (known as tables) byincluding identifying data from one table in another table

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Database management systems (or DBMSs) can be dividedinto two categories -- desktop databases and serverdatabases.

Generally speaking, desktop databases are oriented towardsingle-user applications and reside on standard personalcomputers (hence the term desktop).

Server databases contain mechanisms to ensure thereliability and consistency of data and are geared towardmulti-user applications.

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Outlook contactsPhone Book

News Record

Let’s explore your“paper system”

◦ Client intake forms◦ Job application form◦ Funders reports

Database modeling:◦ Define required fields

from “forms” orrequired reports

◦ Avoid repetition◦ Keep it simple◦ Identify a uniqueidentifier or primary

key

DATABASEEXAMPLE

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Barcode scanners◦ USB or◦ Wireless attached to a

Palm or Pocket PC

Pocket PC◦ Wi-Fi 802.11g,

Bluetooth◦

Wireless networks(real-time on demandsystems)